THIS IS GAMO'S STANDARD 25MM SEAL IT IS USED IN ALMOST ALL GAMO RIFLES AND MANY CLONES OF THIS DESIGN •Sealed face for less lost volume and air loss + more power •Steep cut away taper for less seal contact and friction •Precision moulded from High Quality Polyurethane •Will Provide a modest power increase •Covers piston hole in 7joule reduced power models • Piston shown is NOT included • Do not lubricate seal with a petroleum based lubricant. The seal should only be lubricated with PTFE or silicon lube. Also do not use excessive amounts of moly lube on the piston Dieseling and detonation will damage the seal.
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