These high performance breech o-rings are a direct-fit replacement for worn out factory o-rings. Over a relatively short time the stock rings will soften, chip and warp, causing breech leaks and diminished velocities from your Benjamin Bulldog. 

Our o-rings are made from 90 DURO Buna-N Nitrile material, while the factory rings are 70 or less. A better, tighter seal with the bolt probe increases velocity and improves performance, particularly with heavier slugs that demand the most pressure behind them.

Each Pack includes 8 High Performance O-Rings