PLUNGER RUBBERS & CUP SEALS

Friction-optimized seals for repeatable reciprocating motion.

Our Plunger Rubbers and Cup Seals are manufactured for dynamic sealing applications where a rubber element must maintain consistent sealing pressure across millions of linear reciprocating cycles. The geometry combines a precision-molded sealing lip with a reinforced back body to resist extrusion under high-pressure strokes. Friction coefficients are tuned through compound selection and surface texturing to minimize actuator energy consumption while maximizing seal longevity. Available in single-acting and double-acting configurations for a wide range of bore and stroke dimensions.