PTFE Backup Rings — High-Performance Seal Support by Polypac

PTFE Backup Rings by Polypac — Reliable Seal Reinforcement

High Quality backup rings designed for demanding environments

Polypac's PTFE Backup Rings are engineered to prevent extrusion, extend seal life and reduce friction in hydraulic and oil sealing systems. Manufactured from filled PTFE compounds (bronze, carbon, graphite, MoS₂, glass), our backup rings offer superior chemical resistance, low wear and high dimensional stability under pressure and temperature swings. Ideal for dynamic and static applications, PTFE Backup Rings maintain seal geometry where elastomers alone would fail.

Applications & advantages

Used across hydraulic cylinders, valves, compressors and rotating shafts, Polypac PTFE Backup Rings support O-rings and other soft seals to prevent seal extrusion at high pressures and tight clearances. Benefits include low friction, excellent compatibility with hydraulic fluids, extended service intervals, and minimized downtime. These properties make PTFE Backup Rings a go-to choice for heavy industry, mobile hydraulics and oilfield equipment.

Materials & customization

With origins in filled PTFE production since 2008, Polypac delivers backup rings in a wide range of material formulations to match specific operating conditions. Choose bronze-filled for enhanced wear resistance, carbon-filled for thermal stability, graphite or MoS₂-filled for lubricity, or glass-filled for structural stiffness. We also provide dimensional customization, tight tolerances, and combined solutions with NBR, FKM, silicone, EPDM and FFKM O-rings to meet complex sealing demands.

Manufacturing, testing & quality assurance

Polypac’s 10,000+ m² facility and advanced production/testing equipment ensure consistent quality and performance. Our R&D collaborations with universities and research institutes support materials development and accelerated life testing. Every batch of PTFE Backup Rings undergoes dimensional inspection, hardness and compound verification, and performance validation to meet industry standards.

Why choose Polypac

As an award-winning seal manufacturer and oil seal supplier, Polypac combines deep material expertise with scalable manufacturing and customized engineering support. Whether you need standard PTFE Backup Rings or bespoke solutions for special working conditions, our team delivers reliable, cost-effective seals backed by technical consultation and rapid prototyping.

Get started

Contact Polypac for material selection guidance, CAD-supported design review, and volume manufacturing. Protect your seals and maximize equipment uptime with precision PTFE Backup Rings from Polypac.