Cup Seals

Generally utilised in more traditional machinery and applications, PolyGlobal’s cup seals have a similar application to piston seals. As the piston moves along the cylinder, the cup seal prevents leakage and ensures pressure is maintain on one side if the piston. Whilst this application is similar, the seal profile and design is significantly different to suit the head of the ram.


PolyGlobal produces a number of profile designs and accommodates PCD (Pitch Circle Diameter) requirements. Cup seals are available in double acting designs for applications where pressure is applied in both directions.

Back to Seals