Reply To: Wildcat Breech Seal

Forums PCP Airguns Wildcat Breech Seal Reply To: Wildcat Breech Seal

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I might suspect Ballistol to soften the urethane o-ring material, but would need to test it to be certain.  I know that any alcohol, and many aromatic solvents, will attack/soften polyurethane (source: Parker O-ring Handbook).  Replacing the o-ring with nitrile would eliminate that worry, or just switch to a light silicone oil lube for the pellets instead of Ballistol.