Post poppet o-rings are a high contact spot for your beer. Everything you serve from your keg touches this point.
I think it’s important to use food grade materials for food applications (beer = food). It’s even more important in a spot like this.
Valuebrew has a couple offerings that I really like…
- Universal Poppets – Made from SS 304 + food grade silicone – they’ve had problems keeping these in stock, but they’re available as of this posting, check product page to see if you can get in on this shipment.
- Universal Poppet Replacement O-Rings – Food Safe Silicone – If you already have universal poppets and are looking to replace your existing “who knows what they’re made from” o-rings. 25 are on sale for $6.99.
About Universal Poppets: I use universal style poppets exclusively when rebuilding kegs. Finding the right OEM specific replacement poppets can be a chore. Beyond finding the right part number, these can be prohibitively expensive. Paying $10 to $14, or more, for an OEM poppet isn’t fun. In fact, if you really had to pay that, it may not even make sense to keep the keg.
I’ve long advocated to tossing OEM o-rings immediately. You don’t know what they’re made of, and you can’t get replacements. Replacing them immediately with a known quality o-ring and known part number before trimming to fit means you’ll be using the right materials and have a source for replacements. See: Universal Poppet Tips & Tricks
Price, promotions and availability can change quickly. Check the product page for current price, description and availability.