Description
S&T / UFC Gas Grenade Seal
This is a replacement seal for S&T and UFC gas grenades. Gas grenades rely on seals to hold their charge of gas until they are triggered, and a worn, split or perished seal is one of the most common reasons a grenade leaks, will not hold a fill or loses gas between games.
Replacing a seal is usually far cheaper than replacing the whole grenade, and keeping a spare in your toolkit means a small worn part does not stop you using your grenade on game day.
Signs a seal needs replacing
If your grenade hisses after filling, empties itself overnight, or will not take a full charge of gas, the seal is a likely culprit. Grenades take a lot of knocks from being thrown onto hard ground, and dirt or grit on a seal can also cause it to leak. Inspect the seal for cracks, nicks, flattening or hardening.
Fitting
Make sure the grenade is completely empty of gas before you take it apart. Remove the old seal carefully, clean the seat it sits in, and fit the new seal evenly without twisting it. A tiny amount of silicone oil on the new seal helps it seat properly and keeps it supple. Reassemble the grenade and test it with a short fill before taking it to a game.
Key features
- Replacement seal for gas grenades
- For S&T and UFC gas grenades
- Helps cure leaks and poor gas retention
- Inexpensive alternative to replacing the grenade
- Handy spare for your toolkit
Compatibility
Intended for S&T and UFC gas grenades. These brands make several grenade designs, so compare the seal with the one in your grenade, or check the product images, before ordering. Contact us if you are unsure.
Care and maintenance
Apply a drop of silicone oil to grenade seals from time to time, do not overfill the grenade, and keep it clean, wiping off mud and grit after use. Store grenades in a cool place away from heat.
Who is it for?
This seal suits owners of S&T and UFC gas grenades with a leak to fix, and players who like to keep spares for their grenades.
Please note: Always empty a gas grenade fully before dismantling it, and wear eye protection when working on gas-powered equipment.









