20pk +silicone grease Umarex / Hammerli 12 gauge barrel seals viton/FKM Graco and bumper

and bumper

Best preserved with food-grade silicone lubricant

336 90D O-Ring

Also available Gasket G-478 (after 2/1/08)

20pk +silicone grease Umarex / Hammerli 12 gauge barrel seals viton/FKM Graco and bumperIncludes 8gm tube of silicone grease that does not contain petroleum which causes clogging. Very little is needed at time of application. Available either as a 10 pack or 20 pack. Also available with towel instead of grease. Disclaimer: FKM and Viton are fluorocarbon. Viton is a name Brand commonly used to refer to FKM and is being used here only in an effort to explain and not as a brand name. There is no implication nor suggestion these are Viton