PolyPaks are precision moulded, multi-purpose seals which combine an o-ring type rubber “O-Spring” with a conventional lip seal to provide a unique sealing device which is capable of sealing both vacuum, high and low pressure.


PolyPak seals are available in 3 styles; Standard Polypak, Deep Polypak and Type “B” Polypak.


The PolyPak seal offers a number of advantages over conventional u-cup seals:
The O-Spring stabilises the seal under extreme pressures, preventing seal lip distortion and rolling or twisting in the gland.


At low or high temperature extremes, the O-Spring maintains lip loading on both the I.D. and O.D. of the seal interface.


The PolyPak seal can be stretched or squeezed to accommodate oversized cylinder bores and undersized rods.

PolyPak seals are available in a wide range of materials which ensure the proper combination of abrasion, extrusion and temperature resistance and fluid compatibility in order to maintain high sealability and long service life.


Materials available:


• Nitrile (NBR)
• Fluorocarbon (FKM)
• Hydrogenated Nitrile (HNBR)
• Ethylene Propylene Diene Monomer (EPDM)
• Carboxylated Nitrile (XNBR)

Download any of our brochures for more information:


Seailing Solutions for the Energy, Oil and Gas Industry


Oil and Gas Product Overview


Large Diameter Polymer Products



PRODUCTS: Vast product range with extensive selection of materials available for all applications, with specialist approvals for critical markets and applications.


ENGINEERING: Application Engineers who are highly skilled and experienced in seal design and material recommendations. Complete design service; from initial enquiry and profile geometry selection, through to tool design for mass production and performance analysis and review.


QUALITY: ISO9001:2008, ISO14001:2004, TS16949 and ISO13485 approved manufacturing for quality assured products with supporting processes and documentation to meet customer requirements.

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