Category Archives: Keg O-Rings

Back In Stock! FDA Rated EPDM O-Rings – Low Permeability, Less Oxygen & Off-Flavors

A while back Valuebrew announced the availability of bulk EPDM o-rings for homebrewers.  EPDM is a favorite of many pro brewers for certain applications. Until now, these have not been available to homebrewers, or at least easily available. EPDM has some real advantages over silicone. One of the big ones is a much lower permeability. That means they seal better and since they’re less porous they are more resistant to absorbing off-smells and off-flavors.

They are FDA Rated for food use and NSF61 certified. As of this posting, post, dip tube, lid and internal QD options are available in 10, 25 and 50 count options. Valuebrew has struggled mightily with availability and they’ve already made some indications of potential issues with new EPDM offerings. In particular, the lid o-ring description says they received a small shipment.

Valuebrew has struggled keeping many of their offerings in stock. Some of their EPDM options had sold after our hands on review was published. As of this posting, all options are back in stock. Check site to see if you can still get in on this batch.

FDA Rated EPDM O-Rings!

Check Out Our Hands on Review…

Hands on Review: Valuebrew’s EPDM Keg O-Rings

More about food safe materials:

For whatever reason, it’s difficult to find food safe keg o-rings.  Maybe some of the o-rings that are available are food safe, but very few are actually labeled as such.

The fact is we’re putting beer (food) in our kegs and we should be using food safe materials whenever we can.  More Info: Food Safe Replacement Keg O-Rings

Some Options Featured in Our Keg Rebuild Post!

Also: Kegerator Tips & Gear | Keg Repair Part #s | Recent Keg Finds

Our Top Draft Resources

Price, promotions and availability can change quickly. Check the product page for current price, description and availability. prod:vb

Color Coded Post O-Rings “Blue for Beer, Green for Gas”… in stock and on sale

Custom Color Keg Post O-Rings from Valuebrew:

A Valuebrew Exclusive! We commissioned the production of these custom color o-rings in the same food grade silicone we use for our other premium quality replacement o-rings. We picked the color and placed a massive order to be able to offer you these in bulk quantities at the same price as our other high quality post o-rings.

These can be used for either post. A suggestion we have is to color code your posts Blue for Beer and Green for Gas. This way you’ll immediately be able to tell which post is which. Plus your keg will look awesome!

These are sized to work with standard Ball Lock Cornelius style homebrew kegs. If you’re a Pin Lock keg user, they’ll also work. We recommend using your choice of colors (Blue or Green) on your Pin Lock keg liquid post and our Pin Lock Keg Post O-Rings on the gas post


  • These are available in bulk quantities.  Price varies based on quantity,
  • Compare: Keg Fitting O-Rings at William’s Brewing – multiple color options at 49 cents per o-ring.   No mention of material or food grade materials.

Availability of these have been touch and go since they were introduced. Recently, most blue and green options have been in stock at full price. As of this posting, their in stock and on sale.

Keg Post O-Rings – Food Safe Silicone – in BLUE

Keg Post O-Rings – Food Safe Silicone – in GREEN

Food Safe Keg O-Rings in BULK at Valuebrew

Reader Feedback!

Thanks to John for the feedback via Facebook!  Connect with HBF on Facebook & More

About Food Safe Materials:

  • For whatever reason, it’s difficult to find food safe keg o-rings.  Maybe some of the o-rings that are available are food safe, but very few are actually labeled as such.
  • The fact is we’re putting beer (food) in our kegs and we should be using food safe materials whenever we can.  More Info: Food Safe Replacement Keg O-Rings
  • Finally a food safe option!  Valuebrew has a selection of silicone food grade o-rings.  They also have replacement universal poppet o-rings and internal QD o-rings, also food grade.

Also: Kegerator Tips & Gear | Keg Repair Part #s | Recent Keg Finds

Our Top Draft Resources

Color Coded Post O-Rings “Blue for Beer, Green for Gas”… in stock and on sale

Custom Color Keg Post O-Rings from Valuebrew:

A Valuebrew Exclusive! We commissioned the production of these custom color o-rings in the same food grade silicone we use for our other premium quality replacement o-rings. We picked the color and placed a massive order to be able to offer you these in bulk quantities at the same price as our other high quality post o-rings.

These can be used for either post. A suggestion we have is to color code your posts Blue for Beer and Green for Gas. This way you’ll immediately be able to tell which post is which. Plus your keg will look awesome!

These are sized to work with standard Ball Lock Cornelius style homebrew kegs. If you’re a Pin Lock keg user, they’ll also work. We recommend using your choice of colors (Blue or Green) on your Pin Lock keg liquid post and our Pin Lock Keg Post O-Rings on the gas post


  • These are available in bulk quantities.  Price varies based on quantity,
  • Compare: Keg Fitting O-Rings at William’s Brewing – multiple color options at 49 cents per o-ring.   No mention of material or food grade materials.

Availability of these have been touch and go since they were introduced. Recently, most blue and green options have been in stock at full price. As of this posting, their in stock and on sale.

Keg Post O-Rings – Food Safe Silicone – in BLUE

Keg Post O-Rings – Food Safe Silicone – in GREEN

Food Safe Keg O-Rings in BULK at Valuebrew

Reader Feedback!

Thanks to John for the feedback via Facebook!  Connect with HBF on Facebook & More

About Food Safe Materials:

  • For whatever reason, it’s difficult to find food safe keg o-rings.  Maybe some of the o-rings that are available are food safe, but very few are actually labeled as such.
  • The fact is we’re putting beer (food) in our kegs and we should be using food safe materials whenever we can.  More Info: Food Safe Replacement Keg O-Rings
  • Finally a food safe option!  Valuebrew has a selection of silicone food grade o-rings.  They also have replacement universal poppet o-rings and internal QD o-rings, also food grade.

Also: Kegerator Tips & Gear | Keg Repair Part #s | Recent Keg Finds

Our Top Draft Resources

FDA Rated EPDM O-Rings – Low Permeability, Less Oxygen & Off-Flavors + New Hands on Review

A while back Valuebrew announced the availability of bulk EPDM o-rings for homebrewers.  EPDM is a favorite of many pro brewers for certain applications. Until now, these have not been available to homebrewers, or at least easily available. EPDM has some real advantages over silicone. One of the big ones is a much lower permeability. That means they seal better and since they’re less porous they are more resistant to absorbing off-smells and off-flavors.

They are FDA Rated for food use and NSF61 certified. As of this posting, post, dip tube, lid and internal QD options are available in 10, 25 and 50 count options. Valuebrew has struggled mightily with availability and they’ve already made some indications of potential issues with new EPDM offerings. In particular, the lid o-ring description says they received a small shipment.

Valuebrew has struggled keeping many of their offerings in stock. Some of their EPDM options had sold out. As of this posting, all options are back in stock. Check site to see if you can get in on this order.

FDA Rated EPDM O-Rings!

Check Out Our Hands on Review…

Hands on Review: Valuebrew’s EPDM Keg O-Rings

More about food safe materials:

For whatever reason, it’s difficult to find food safe keg o-rings.  Maybe some of the o-rings that are available are food safe, but very few are actually labeled as such.

The fact is we’re putting beer (food) in our kegs and we should be using food safe materials whenever we can.  More Info: Food Safe Replacement Keg O-Rings

Some Options Featured in Our Keg Rebuild Post!

Also: Kegerator Tips & Gear | Keg Repair Part #s | Recent Keg Finds

Our Top Draft Resources

Price, promotions and availability can change quickly. Check the product page for current price, description and availability. prod:vb

Hands on Review: Valuebrew’s EPDM Keg O-Rings

This review is by Homebrew Finds Contributor Brad Probert.  Brad is an engineer, expert homebrewer and experienced reviewer.  Grab a link to Brad’s website at the end of this review.

In the world of homebrewing, you can surround yourself by as little or as much science as you want. O-rings, seals, and gaskets come in different varieties in homebrewing. The most commonly found material is silicone, and it’s often elevated as the “best” material. As with most things, there are benefits/drawbacks to each different type of material. Silicone has a very wide temperature range, making a good gasket seal choice at cold temperatures, as well as at hot/boiling temperatures. Its high flexibility makes it well-suited to sealing uneven gaps or perhaps non-ideal sealing surfaces.

Some Old Dip Tube O-rings Were in Rough Shape

However, one of its drawbacks is it does not handle acid-based cleaners well, so Star San sanitizing can deteriorate the material. The occasional sanitizing spray might not be a significant degradation, but you definitely don’t want to soak silicone parts in Star San for extended periods of time. When you’re dealing with the cold side like fermentors or kegs, you’ll be sanitizing frequently, and this compatibility might be a consideration for you.


Check Current Price & Availability, Review Continues Below:

Note that Valuebrew has regularly struggled keeping products in stock. If something you’re looking for is out of stock, connect with us and we’ll keep you up to date on availability issues.


Another aspect of silicone that’s pertinent to cold side operation is its ability to allow oxygen to pass through it. It’s difficult to find good, standardized comparisons of material alone between silicone and EPDM because there are so many factors involved like additives in the material, thickness of material, temperature, pressure, etc. I was able to find one research paper (link below) that tested common dimension TC gaskets with different materials, and it showed the Oxygen permeability of silicone was roughly 25x as high as EPDM. So for those long durations of either sitting in your fermentor, or even longer in your keg, EPDM is the better choice to minimize oxygen mixing in through the seals. On kegs, the biggest pathway is of course the keg lid, but there are also O-ring gaskets on the dip tube, gas & liquid posts, and even inside the disconnect housing itself.

Keg lid o-rings



Hands on Review

I hadn’t changed my keg O-rings since the kegs were new, which had been several years. I got a full set of EPDM O-rings that ValueBrew offered- keg lid, keg post, dip tube, and internal QD. The feel of the EPDM material was notably different. It wasn’t stiff, but was relatively stiffer than super-compliant silicone O-rings. The material had a very high-quality feel- smooth with a slightly waxy texture. It definitely had the feel of quality.

Aside from the feel and visual review, I wanted to get some “data” on how the O-rings performed. The biggest draw of EPDM for me was the low oxygen permeability. But this is hard to objectively measure, and simply tasting a beer would likewise be prone to other differences overshadowing oxygen pickup. I had a Milwaukee MW600 DO meter, but the level of oxygen uptake that could allow oxidation reactions to happen is below the threshold of measurement for the meter. Not to mention that once oxygen is available and goes through oxidation reactions with the beer, it’s no longer pure oxygen to be measured by such a meter. I gave it a try anyway. I did a side-by-side keg test with two kegs filled with water. One keg had a set of silicone O-rings, the other the EPDM O-rings. The kegs were first purged by filling with water completely and pushing that out with CO2. Then they were filled with water in through the dip tube until completely full again, and then 0.5 gallons of water pushed out with CO2 so both kegs had the same amount of headspace. Measurement with my MW600 showed indetectable DO at the start of my test, the two checkpoints in between, and at the end of a month. Not surprising since staling reactions happen at a lower level of DO than the MW600 can detect, but it does tell me that silicone O-rings aren’t a complete disaster.

Keg Post O-Rings

The other test I did was a pressurized test to look for leaks. For this I used 6 kegs that were retrofitted with EPDM O-rings that I had recently cleaned and purged. I pressurized them all to just over 10 psi of CO2 from my tank and let them sit at basement temperature (65F). I went back and checked them all for pressure loss using a Spunding Valve. With multiple checks over a one-week period, only one of them had any pressure loss.

Dip Tube O-rings

For that keg, I was able to see it was leaking quite significantly from the bottom of the liquid out keg post. Tightening the post had no effect, and swapping to another EPDM O-ring (plus keg lube on the O-ring) also had no effect. I then got my calipers out and started measuring O-ring thickness. I’ll preface these numbers with the disclaimer that measuring thickness of a compliant material with a handheld gauge is problematic. That said, I found the original dip tube O-rings I had removed from my kegs all measured about 2.8 mm thick and one measured 2.4 mm. New parts from the EPDM bag (including the ones that were leaking on my keg) measured 2.4 mm. I happened to have a keg O-ring replacement kit, and that O-ring measured 3.0 mm. I swapped that 3.0 mm O-ring onto the diptube and my pressure leak was gone, and the keg held pressure for my 1-week test.

Internal QD O-rings



My research indicated the most common cross-section thickness of these O-rings is 3/32”, which is 2.38 mm. So the EPDM rings were a standard thickness. The keg I was using it on was a keg I bought new probably 5 years ago, so it was in good shape. It was not a used reconditioned keg that had seen a lot of use & abuse in the field serving Pepsi at some random diner. It just happened to need a slightly thicker O-ring. Lesson learned for me here was to always do a pressure test like this, and not just assume all new O-rings are going to be better than the old O-rings they’re replacing.

Pressure Holding Test with Spunding – Related: Hands on Review: Kegland BlowTie Spunding Valve – Build a Spunding Valve! – How and Why

The final evaluation I did was on a rehabbed pin lock keg that I had bought used, converted over to ball lock by my LHBS. When I got that keg, I found it had a slow leak through the lid, and upon closer examination, I found the lip of the opening had a slight dent in it. I had previously bought a silicone O-ring for this lid, as I had heard that silicone was more compliant, and would deal with this sort of thing better. I wasn’t sure if these EPDM O-rings would handle that, but the keg held pressure with the EPDM lid O-ring the same as the other kegs.

Conclusions

In conclusion, I found the ValueBrew EPDM O-rings to be of high quality. My leak tests showed that the O-rings worked well, but it wasn’t a complete guarantee, so you need to test it on your specific kegs. And although I didn’t have the right equipment to characterize the benefit EPDM has over Silicone when it comes to oxygen permeability, the science is there to back it up. And one less thing to spoil my hoppy beers sounds like a good idea to me!

Check Current Price & Availability, Review Continues Below:

Note that Valuebrew has regularly struggled keeping products in stock. If something you’re looking for is out of stock, connect with us and we’ll keep you up to date on availability issues.

Also: Hands on Review: Valuebrew Stainless Steel Ball Lock Jumpers – Works with Liquid AND Gas

Vauebrew Carries Custom Green and Blue Post O-Rings

Rebuild Your Used Kegs

Keg Deals!

keg deals

Everything For Your Kegerator!

Keg Reviews!

Food Grade Keg O-rings in Bulk!

bulk keg orings

 

More Homebrew Finds!

Also: Kegerator Tips & Gear | Keg Repair Part #s | Recent Keg Finds

Our Top Draft Resources!

By Brad Probert.  Check out Brad’s website – beersnobby.com

Special Thanks to Valuebrew for providing the o-ringst used for evaluation in this review.

Price, promotions and availability can change quickly. Check the product page for current price, description and availability.

Make sure the components you use are compatible and rated for your intended application.  Contact manufacturer with questions about suitability or a specific application.  Always read and follow manufacturer directions.  review:vbepdm tag:tpr

Vauebrew Taking Orders Again… O-Rings in Food Safe Silicone, Ball Lock Jumpers, Universal Poppets & More

Universal Poppet Replacement O-Rings - Food Safe Silicone

Valuebrew offers a lineup of food grade keg replacement o-rings in bulk quantities.  Most offerings are silicone with one Buna-N option.  Everything they carry is food grade, more info below.  They have some unique offerings like bulk pin lock size post o-rings, replacement universal poppet o-rings, bulk internal QD o-rings and color coded Blue and Green post o-rings

Some of these offerings are featured in our Keg Rebuild How-To

They’ve also recently introduced ball lock jumpers and universal poppets (equipped with their food grade silicone poppets.

  • Valuebrew has struggled with availability on some of their options.
  • For the last several days they haven’t been accepting new orders. Talking with them they periodically do this to be able to keep up with fulfilling orders.
  • They must be caught back up because they’re accepting orders again.
  • If you were one that tried to place and order and couldn’t, here you go…

Complete Lineup; Food Safe Keg O-Ringsball lock jumpers and universal poppets

Universal Poppet Tips & Tricks…

One of my tips is to immediately replace OEM o-rings…

Reader Feedback!

Thanks to John for the feedback via Facebook!  Connect with HBF on Facebook & More

More about food safe materials:

For whatever reason, it’s difficult to find food safe keg o-rings.  Maybe some of the o-rings that are available are food safe, but very few are actually labeled as such.

The fact is we’re putting beer (food) in our kegs and we should be using food safe materials whenever we can.  More Info: Food Safe Replacement Keg O-Rings

Featured in Our Keg Rebuild Post!

Also: Kegerator Tips & Gear | Keg Repair Part #s | Recent Keg Finds

Our Top Draft Resources

Price, promotions and availability can change quickly. Check the product page for current price, description and availability. prod:vbup

FDA Rated EPDM O-Rings – Low Permeability, Less Oxygen & Off-Flavors – Limited Time Deal on Dip Tube Options

A while back Valuebrew announced the availability of bulk EPDM o-rings for homebrewers.  EPDM is a favorite of many pro brewers for certain applications. Until now, these have not been available to homebrewers, or at least easily available. EPDM has some real advantages over silicone. One of the big ones is a much lower permeability. That means they seal better and since they’re less porous they are more resistant to absorbing off-smells and off-flavors.

They are FDA Rated for food use and NSF61 certified. As of this posting, post, dip tube, lid and internal QD options are available in 10, 25 and 50 count options. Valuebrew has struggled mightily with availability and they’ve already made some indications of potential issues with new EPDM offerings. In particular, the lid o-ring description says they received a small shipment.

Valuebrew has struggled keeping many of their offerings in stock. Some of their EPDM options had sold out. As of this posting, all options are back in stock. Check site to see if you can get in on this order.

For a limited time, save on dip tube o-rings

From Valuebrew… Limited Time Deal: EPDM options cost us more, that’s why we need to charge more compared to our silicone options. We worked with our supplier and got a great deal on EPDM dip tube o-rings and we’re going to pass that savings on to you. For a limited time we’ve marked our EPDM dip tube o-rings to match our silicone dip tube o-rings.

FDA Rated EPDM O-Rings!

More about food safe materials:

For whatever reason, it’s difficult to find food safe keg o-rings.  Maybe some of the o-rings that are available are food safe, but very few are actually labeled as such.

The fact is we’re putting beer (food) in our kegs and we should be using food safe materials whenever we can.  More Info: Food Safe Replacement Keg O-Rings

Some Options Featured in Our Keg Rebuild Post!

Also: Kegerator Tips & Gear | Keg Repair Part #s | Recent Keg Finds

Our Top Draft Resources

Price, promotions and availability can change quickly. Check the product page for current price, description and availability. prod:vb

Back In Stock (and shipping)… Blue Color Coded Post O-Rings “Blue for Beer, Green for Gas”

Custom Color Keg Post O-Rings from Valuebrew:

A Valuebrew Exclusive! We commissioned the production of these custom color o-rings in the same food grade silicone we use for our other premium quality replacement o-rings. We picked the color and placed a massive order to be able to offer you these in bulk quantities at the same price as our other high quality post o-rings.

These can be used for either post. A suggestion we have is to color code your posts Blue for Beer and Green for Gas. This way you’ll immediately be able to tell which post is which. Plus your keg will look awesome!

These are sized to work with standard Ball Lock Cornelius style homebrew kegs. If you’re a Pin Lock keg user, they’ll also work. We recommend using your choice of colors (Blue or Green) on your Pin Lock keg liquid post and our Pin Lock Keg Post O-Rings on the gas post


  • These are available in bulk quantities.  Price varies based on quantity,
  • Compare: Keg Fitting O-Rings at William’s Brewing – multiple color options at 49 cents per o-ring.   No mention of material or food grade materials.
  • Availability of these have been touch and go.  The last couple days all bulk keg o-rings were unavailable.  As of this posting, everything is available again.  Check site for current availability.
  • The Blue have been sold out for a while now. They came back in stock for pre-order a few days back. As of this posting, they’re back in stock and shipping. Check the product page to see if you can get in on this shipment.

Food Safe Keg O-Rings in BULK at Valuebrew

Keg Post O-Rings – Food Safe Silicone – in BLUE

Keg Post O-Rings – Food Safe Silicone – in GREEN

Reader Feedback!

Thanks to John for the feedback via Facebook!  Connect with HBF on Facebook & More

About Food Safe Materials:

  • For whatever reason, it’s difficult to find food safe keg o-rings.  Maybe some of the o-rings that are available are food safe, but very few are actually labeled as such.
  • The fact is we’re putting beer (food) in our kegs and we should be using food safe materials whenever we can.  More Info: Food Safe Replacement Keg O-Rings
  • Finally a food safe option!  Valuebrew has a selection of silicone food grade o-rings.  They also have replacement universal poppet o-rings and internal QD o-rings, also food grade.

Also: Kegerator Tips & Gear | Keg Repair Part #s | Recent Keg Finds

Our Top Draft Resources

Back In Stock (for Pre-Order)… Blue Color Coded Post O-Rings “Blue for Beer, Green for Gas”

Custom Color Keg Post O-Rings from Valuebrew:

A Valuebrew Exclusive! We commissioned the production of these custom color o-rings in the same food grade silicone we use for our other premium quality replacement o-rings. We picked the color and placed a massive order to be able to offer you these in bulk quantities at the same price as our other high quality post o-rings.

These can be used for either post. A suggestion we have is to color code your posts Blue for Beer and Green for Gas. This way you’ll immediately be able to tell which post is which. Plus your keg will look awesome!

These are sized to work with standard Ball Lock Cornelius style homebrew kegs. If you’re a Pin Lock keg user, they’ll also work. We recommend using your choice of colors (Blue or Green) on your Pin Lock keg liquid post and our Pin Lock Keg Post O-Rings on the gas post


  • These are available in bulk quantities.  Price varies based on quantity,
  • Compare: Keg Fitting O-Rings at William’s Brewing – multiple color options at 49 cents per o-ring.   No mention of material or food grade materials.
  • Availability of these have been touch and go.  The last couple days all bulk keg o-rings were unavailable.  As of this posting, everything is available again.  Check site for current availability.
  • The Blue have been sold out for a while now. They came back in stock for pre-order a few days back. As of this posting, they’re back in stock and shipping. Check the product page to see if you can get in on this shipment.

Food Safe Keg O-Rings in BULK at Valuebrew

Keg Post O-Rings – Food Safe Silicone – in BLUE

Keg Post O-Rings – Food Safe Silicone – in GREEN

Reader Feedback!

Thanks to John for the feedback via Facebook!  Connect with HBF on Facebook & More

About Food Safe Materials:

  • For whatever reason, it’s difficult to find food safe keg o-rings.  Maybe some of the o-rings that are available are food safe, but very few are actually labeled as such.
  • The fact is we’re putting beer (food) in our kegs and we should be using food safe materials whenever we can.  More Info: Food Safe Replacement Keg O-Rings
  • Finally a food safe option!  Valuebrew has a selection of silicone food grade o-rings.  They also have replacement universal poppet o-rings and internal QD o-rings, also food grade.

Also: Kegerator Tips & Gear | Keg Repair Part #s | Recent Keg Finds

Our Top Draft Resources