Polypac Spring Energized Seal

Polypac Spring Energized Seal — Reliable sealing for demanding applications

Polypac Spring Energized Seals are designed to provide consistent, long-lasting sealing where regular seals struggle. Built with a resilient spring and engineered sealing material, these seals maintain contact under varying pressure, temperature, and wear conditions. They are ideal for hydraulic cylinders, rotary shafts, valves, and other critical components.

Why choose Polypac Spring Energized Seals?

• Consistent sealing force: The internal spring keeps the sealing lip pressed against the mating surface, ensuring reliable sealing even when pressure fluctuates.
• Low friction and long life: PTFE-based materials and careful design reduce wear and heat, extending service intervals.
• Wide material options: Available in filled PTFE (bronze, carbon, graphite, MoS2, glass) and compatible with common elastomers and O-ring materials like NBR, FKM, silicone, EPDM, and FFKM.
• Works in harsh environments: Performs in extreme temperatures, high pressure, chemical exposure, and dynamic motion.

Polypac quality and customization

Polypac is a scientific and technical manufacturer focused on seals and sealing materials. Our factory spans more than 10,000 square meters with 8,000 square meters of production space and advanced testing equipment. Since 2008 we have developed filled PTFE products and expanded into a full range of O-rings and customized rubber components.

Testing, research, and support

We maintain long-term collaborations with universities and research institutes to keep our products at the leading edge. Every Spring Energized Seal undergoes strict dimensional, material, and performance testing to meet demanding specifications. Custom sizes and material blends are available to match special working conditions.

Applications and benefits

Common uses include hydraulic and pneumatic systems, rotary and reciprocating shafts, subsea equipment, and industrial valves. Customers choose Polypac for proven reliability, reduced maintenance costs, and tailored sealing solutions that increase uptime.

For dependable spring energized seals backed by advanced manufacturing and testing, trust Polypac to deliver quality, performance, and service you can rely on.