Rubber Polyurethane Tank Orings (10/ct)

10 count bag of plastic standard tank o'rings. Will work on paintball marker tanks and on various marker parts that are the same size. Keep well lubricated for best performance. The plastic orings are much more durable than rubber polyurethane o-rings. It does not stretch, expand or swell up like rubber polyurethane o-rings. Made for hundreds of uses before needing replacement.