Category Archives: Keg O-Rings

Keg O-Ring Materials Selection! – EPDM, Silicone and Buna-N?

See More About O-Rings in our Keg Rebuild Post – Jump To: Replacing O-Rings

Selecting the Right Material for Keg O-Rings

I would venture a guess that Silicone and Buna-N are the two most commonly used compounds for keg o-rings. EPDM, which has been the choice of professionals for a long time, is probably a distant third, but coming on strong since they’ve become more accessible to homebrewers.

This post is going to take a look at all three, with the goal of helping your choose the right material for your application.

But first things first, let’s talk about food safe materials…

Food Safe Materials for Keg O-Rings?

Most of the o-rings that are marketed to homebrewers do not claim to be food safe.

In my experience, it’s extremely difficult to find offerings that claim to be safe for food contact.  Maybe some of the o-rings that are available are food safe, but very few are actually labeled as such.

But why?  One possible reason… they aren’t food safe.  Beyond that, one industry insider I spoke with said suppliers have a potential problem with fulfillment.  Since many options and materials are available, It’s difficult for some distributors or sellers to guarantee you’re getting a food safe option.

  • Just because an o-ring is marketed for use in a keg doesn’t automatically mean that the materials and production processes used are food safe.
  •  If you think about it from a random supplier or manufacturer’s perspective… they don’t know what you’re putting in your keg, maybe it’s not even food.  The problem that we, as homebrewers, have is is… beer is food and meant for human consumption.
  • You cannot say all o-rings made from [fill in material here] are food safe.  Certain quality standards and processes are required.

One notable supplier features all food safe o-ring offerings.

Generally speaking, food safe o-rings may cost a little more, but, we’re, generally, only talking a few cents per o-ring.  It’s worth it.

If you’re using your keg for anything food related (beer=food)… My recommendation is to purchase o-rings made out of material safe for food contact.

Compound Selection – Comparing EPDM, Silicone and Buna-N

Terminology

  • Compression Set Resistance – A measurement of the ability of a substance to return to it’s original thickness after long term compression.
  • Compressibility – How well can a material compress to make a quality seal? This is related to hardness, but practically it’s not exactly the same thing. Most keg o-rings are the same hardness, 70A, yet we see Silicone sealing better than Buna-N.
  • Permeability – How well can well can air or oxygen transverse a compound. This is measured in different ways, I’m going to generalize labeling materials excellent or good.
  • Typical Durometer – A measurement of the hardness of a material

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Color Code Post O-Rings “Blue for Beer, Green for Gas” or Match QD Colors

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.

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

Also Available in Gray and Black…

If you’ve read Homebrew Finds for long you’ve no doubt seen Valuebrew’s Blue and Green Custom Color O-Rings in food grade silicone. These are featured in our very popular keg rebuild step by step.

Valuebrew has just introduced Gray and Black o-rings. As the picture indicates these are designed to match standard gray and black keg QDs.  These have become standard colors on ball lock, pin lock (usually the bottom portion of the QD) and even recently released Kegland QDs (center portion).

The gray and black are also made from food grade silicone and also available in bulk quantities.

Gray & Black Post O-Rings 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

Limited Availability 10 Count Offering… Food Grade EPDM Keg LID O-Rings + Stacking Deals

Keg Lid O-Rings - FDA Rated EPDM

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 Custom Color Coded Post O-rings – available in two colors schemes, gray & black (matches QD colors) and blue & green (blue for beer, green for gas),

Some of these offerings are detailed on our recently released Keg Rebuild How-To

10 Pack Special…

Valuebrew has always offered these in 5 count packs. They are running a limited time 10 pack deal. This allows you to purchase 10 EPDM o-rings at a lower price and you only have to pick 2 add-ons. To get 10 via the standard offering, you’d need to purchase a total of 4 add-ons.

Coupon code 10pack takes another 10% off

Limited stock available for this deal, VB says… “Note that we’ve set aside a limited amount of our stock for this promo. When those are gone, they’re gone.”

Note: You must use this link. The 10 pack special doesn’t show on the standard product page or by searching…

Keg Lid O-Rings – FDA Rated EPDM – 10 Pack

Standard Page: EPDM Keg Lid O-Rings

Freebie Place an order of $50 or more and they’ll also throw in a 4 pack of POP Pints

Complete Lineup; Food Safe Keg O-Rings

Related: Keg O-Ring Materials Selection

Reader Feedback!

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

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Limited Availability 10 Count Offering… Food Grade EPDM Keg LID O-Rings

Keg Lid O-Rings - FDA Rated EPDM

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 Custom Color Coded Post O-rings – available in two colors schemes, gray & black (matches QD colors) and blue & green (blue for beer, green for gas),

Some of these offerings are detailed on our recently released Keg Rebuild How-To

10 Pack Special…

Valuebrew has always offered these in 5 count packs. They are running a limited time 10 pack deal. This allows you to purchase 10 EPDM o-rings at a lower price and you only have to pick 2 add-ons. To get 10 via the standard offering, you’d need to purchase a total of 4 add-ons.

Coupon code 10pack takes another 10% off

Limited stock available for this deal, VB says… “Note that we’ve set aside a limited amount of our stock for this promo. When those are gone, they’re gone.”

Note: You must use this link. The 10 pack special doesn’t show on the standard product page or by searching…

Keg Lid O-Rings – FDA Rated EPDM – 10 Pack

Standard Page: EPDM Keg Lid O-Rings

Freebie Place an order of $50 or more and they’ll also throw in a 4 pack of POP Pints

Complete Lineup; Food Safe Keg O-Rings

Related: Keg O-Ring Materials Selection

Reader Feedback!

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

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Valuebrew’s Black Friday Sale – Bulk Food Grade O-Rings, Keg Repair Parts & More

Valuebrew offers a lineup of food grade keg replacement o-rings in bulk quantities.  Most offerings are silicone or EPDM 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 detailed on our recently released Keg Rebuild How-To

Valuebrew is discounting bulk food grade o-rings, DuoTight Compatible Gear and ball lock jumpers by an EXTRA 15% when you spend $20 or more.  This stacks on top of existing discounts.

This sale DOES include their recently announced FDA Rated EPDM O-Rings!

Bulk Food Grade O-Rings, Universal Poppets and Ball Lock Jumpers – save another 15% when you use coupon code BF2022 with an order of $20 or more

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

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

Our Top Draft Resources

Check sale or product page for current availability & pricing

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

Valuebrew’s Black Friday Sale

Valuebrew offers a lineup of food grade keg replacement o-rings in bulk quantities.  Most offerings are silicone or EPDM 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 detailed on our recently released Keg Rebuild How-To

Valuebrew is discounting bulk food grade o-rings, DuoTight Compatible Gear and ball lock jumpers by an EXTRA 15% when you spend $20 or more.  This stacks on top of existing discounts.

This sale DOES include their recently announced FDA Rated EPDM O-Rings!

Bulk Food Grade O-Rings, Universal Poppets and Ball Lock Jumpers – save another 15% when you use coupon code BF2022 with an order of $20 or more

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

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

Our Top Draft Resources

Check sale or product page for current availability & pricing

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

Black Friday Deal on Valuebrew’s Ball Lock Jumpers!

Valuebrew offers a lineup of food grade keg replacement o-rings in bulk quantities.  Most offerings are silicone or EPDM 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 detailed on our recently released Keg Rebuild How-To

Valuebrew is discounting bulk food grade o-rings, DuoTight Compatible Gear and ball lock jumpers by an EXTRA 15% when you spend $20 or more.  This stacks on top of existing discounts.

This sale DOES include their recently announced FDA Rated EPDM O-Rings!

Bulk Food Grade O-Rings, Universal Poppets and Ball Lock Jumpers – save another 15% when you use coupon code BF2022 with an order of $20 or more

Check sale or product page for current availability & pricing

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

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. pst:vbfsor

Black Friday Deal on Bulk EPDM O-Rings – Low Permeability, Less Oxygen & Off-Flavors

Valuebrew has 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.

FDA Rated EPDM O-Rings!

Black Friday Sale! Valuebrew is discounting bulk food grade o-rings, DuoTight Compatible Gear and ball lock jumpers by an EXTRA 15% when you spend $20 or more.  This stacks on top of existing discounts.

This sale DOES include their recently announced FDA Rated EPDM O-Rings!

Bulk Food Grade O-Rings, Universal Poppets and Ball Lock Jumpers – save another 15% when you use coupon code BF2022 with an order of $20 or more

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

Our Top Draft Resources

Check sale or product page for current availability & pricing

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

Valuebrew’s Black Friday Sale!

Valuebrew offers a lineup of food grade keg replacement o-rings in bulk quantities.  Most offerings are silicone or EPDM 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 detailed on our recently released Keg Rebuild How-To

Valuebrew is discounting bulk food grade o-rings, DuoTight Compatible Gear and ball lock jumpers by an EXTRA 15% when you spend $20 or more.  This stacks on top of existing discounts.

This sale DOES include their recently announced FDA Rated EPDM O-Rings!

Bulk Food Grade O-Rings, Universal Poppets and Ball Lock Jumpers – save another 15% when you use coupon code BF2022 with an order of $20 or more

Check sale or product page for current availability & pricing

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

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. pst:vbfsor

Save on Food Grade EPDM Keg LID O-Rings

Keg Lid O-Rings - FDA Rated EPDM

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 Custom Color Coded Post O-rings – available in two colors schemes, gray & black (matches QD colors) and blue & green (blue for beer, green for gas),

Some of these offerings are detailed on our recently released Keg Rebuild How-To

As of this posting coupon code EarlyBFepdm takes 10% off FDA Rated EPDM Lid O-rings as part of an early Black Friday Sale. This is a good deal considering past availability issues.

Check sale or product page for current availability & pricing

EPDM Keg Lid O-Rings

All Lid O-Ring Options at Valuebrew

Complete Lineup; Food Safe Keg O-Rings

Related: Keg O-Ring Materials Selection

Reader Feedback!

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

Continue reading