Will these fit a 12oz SS coffee mug?!

These are meant to fit a "Corny" keg used mostly by homebrewers these days. The lid opening on that is about 4 inches by 2 ¾ (that is a rough guess). They are also quite think at about ⅜ of an inch. The smaller gaskets are maybe ½ inch and smaller.

Will these work on a firestone keg?

Yes. I used this to replace gaskets in one of my Firestone kegs. Make sure you get a tube keg lube and give the gaskets a light coating when you install them.

Weird question, I know, can these go in the oven/withstand heat?

Thank you for your question, it can not be put into the oven.

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MRbrew Corny Keg O-Ring Gasket Kit, 28 Pcs Rubber Seals for Homebrew Keg

Product ID: 282843220

Details

Brand
MRbrew
Color
Black
Material
Plastic
Number of Packs
1
Unit Count
28 Count

💧leak-proof design

🔧includes removal tool

🛡️28 durable seals

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Description

🍺 Seal the deal with MRbrew – your keg’s best friend!

COMPLETE KEGGING KIT - 28-piece set covers ball lock posts, dip tubes, and carbonation lids—everything your keg needs.
SCRATCH FREE MAINTENANCE - Plastic removal tool lets you swap O-rings without damaging your keg components.
TRUSTED BY HOMEBREW PROS - Top-rated and ranked #9 in Beer Brewing Kegs & Kegging for reliable performance.
DURABILITY MEETS CONVENIENCE - Long-lasting materials resist wear and are easy to clean, saving you time and hassle.
LEAK FREE BREWING CONFIDENCE - Premium rubber and silicone seals ensure zero leaks, keeping your brew fresh and mess-free.

The MRbrew Corny Keg O-Ring Gasket Kit includes 28 high-quality rubber, silicone, and plastic seals designed for homebrew keg systems. This leak-proof, durable set fits ball lock keg posts, dip tubes, and carbonation lids, and comes with a plastic removal tool to protect your equipment during maintenance. Highly rated and essential for any serious homebrewer, it ensures a professional, mess-free kegging experience.

Specifications

ASIN	B08VMR5KHG
Best Sellers Rank	#44,488 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #9 in Beer Brewing Kegs & Kegging
Brand	MRbrew
Brand Name	MRbrew
Color	Black
Customer Reviews	4.4 out of 5 stars 221 Reviews
Item Highlight	Corny Keg Replacement O Ring Seals Kit, Multi Size Gaskets Fit Keg Lid Dip Tube Ball Lock Post, Kegerator Essential Parts
Material	Plastic
Material Type	Plastic
Number of Items	28
Number of Packs	1
Number of Pieces	21
Set Name	MRbrew Homebrew Gasket Set
Unit Count	28 Count

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B/.30

Duties & taxes included

In stock

Sold byAmazon PanamaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Panama.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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