Polypac Diaphragms — Durable, Custom Hydraulic Diaphragm Seals

Polypac Diaphragms — Reliable Sealing for Demanding Conditions

Polypac diaphragms are engineered to provide dependable, leak-free performance in hydraulic and oil-sealing applications. Backed by over a decade of material science and seal manufacturing experience, our diaphragms combine flexible design, high-quality compounds, and precision production to meet the needs of harsh working environments.

Key Features

• Custom materials: available in NBR, FKM, silicone, EPDM, FFKM and specialty PTFE blends for varied chemical and temperature resistance.
• Precision manufacturing: produced in our 8,000 m2 factory using industry-leading equipment for consistent dimensions and tight tolerances.
• Long service life: wear-resistant formulations and careful quality control reduce downtime and replacement costs.
• Flexible design: tailored shapes and sizes to fit custom housings and special working conditions.

Applications

Polypac diaphragms are ideal for hydraulic actuators, valves, pumps, accumulators and other systems where flexible, reliable sealing is critical. They perform well under pressure, cyclic movement, and exposure to oils, fuels and hydraulic fluids.

Why Choose Polypac

Founded in 2008, Polypac began with advanced filled PTFE seals and has since expanded into a full range of O-rings and diaphragms. Our factory covers more than 10,000 m2 and we work closely with universities and research institutes to develop sealing materials and custom solutions. This combination of research, scale and modern testing equipment ensures quality you can trust.

Whether you need off-the-shelf diaphragms or fully customized designs for extreme temperatures, chemical exposure or tight tolerances, we provide clear guidance, fast prototyping and dependable production. Contact Polypac to specify the right diaphragm for your application and reduce leakage, maintenance and downtime.