Restore power and energy with a new breech seal and barrel shim kit.The kit contains 3 VITON replacement O-rings and 3 precision stainless steel barrel shims. VITON seals are harder, more durable and can withstand more shots than standard Buna seals. This is my best kit!
These items will fit the breech grove in most Umarex, RWS, and Xisco airguns, including:
- Diana / RWS 24, 25, 26, 27, 28, 34, 35, 36, 38, 350, 45, and like models.
- Umarex Octane, Ruger Yukon, Air Hawk, Air Hawk Elite, Air Magnum, and Xisco break barrel rifles
Each precision stainless steel shim is ~.007 thick.
Before the installation -
1). Check your breech with the edge of a credit card
2). If the credit card catches on the rubber seal, you need to replace the O-ring
3). If your credit card doesn't catch or barely catches the rubber seal, chances are, you need to add the shim and a new O-ring