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 | Corny Keg Replacement O Ring Seals Kit, Multi Size Gaskets Fit Keg Lid Dip Tube Ball Lock Post, Kegerator Essential Parts

Product ID: 433201317

Details

Brand
MRbrew
Colour
Black
Material
Plastic
Net Quantity
28.0 Count
Number of Pieces
21

🔒Leak-proof sealing tech

♻️Durable, easy-clean materials

🛠️28-piece comprehensive kit

7317 som

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Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🍺 Seal the deal, sip with pride!

ZERO LEAK GUARANTEE - Premium rubber and silicone gaskets ensure airtight seals, keeping your brew fresh and your setup mess-free.
BUILT TO LAST CLEAN - High-grade durable materials resist wear and simplify cleaning, so your kegging system stays flawless batch after batch.
TRUSTED BY HOMEBREW PROS - Highly rated by 180+ brewers, this kit is the essential upgrade your keg setup has been craving.
TOOL ASSISTED MAINTENANCE - Includes a smart o-ring removal tool to protect your gear and speed up gasket swaps without damage.
COMPLETE KEGGING CONFIDENCE - 28 precision-engineered pieces cover every seal you need for Cornelius kegs and ball lock posts.

The MRbrew Homebrew Gasket Set is a 28-piece kit designed for Cornelius keg systems, featuring durable rubber, silicone, and plastic components that prevent leaks and ensure airtight seals. It includes all necessary gaskets for ball lock keg posts, dip tubes, and carbonation lids, plus a specialized o-ring removal tool for easy maintenance. Trusted by hundreds of homebrewers, this kit guarantees long-lasting performance and hassle-free kegging.

Reviews

J**Y

Refresh your kegs!

9.02.2026

S**T

All I need and the tool is great

9.07.2024

D**H

Slow delivery but a perfect fit.

22.08.2025

B**E

Just what I needed.

14.09.2023

J**.

Just as described

15.05.2024

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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The product exactly matches the description. Very satisfied with my purchase.

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2 weeks ago

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7317 som

Duties & taxes included

In stock

Sold byAmazon KyrgyzstanDelivered 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 Kyrgyzstan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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ASIN	B08VMR5KHG
Brand	MRbrew
Brand Name	MRbrew
Colour	Black
Customer Reviews	4.5 out of 5 stars 180 Reviews
Material	Plastic
Material Type	Plastic
Net Quantity	28.0 Count
Number of Pieces	21
Unit Count	28.0 Count

MRbrew Corny Keg O-Ring Gasket Kit, 28 Pcs Rubber Seals for Homebrew Keg | Corny Keg Replacement O Ring Seals Kit, Multi Size Gaskets Fit Keg Lid Dip Tube Ball Lock Post, Kegerator Essential Parts

Details

Details

Description

Specifications

Reviews

Common Questions