Polypac — Custom O-rings Manufacturer for Precision Sealing

Polypac — Your Trusted Custom O-rings Manufacturer

Overview

Polypac is a scientific and technical hydraulic seal manufacturer and oil seal supplier specializing in seal production, sealing material development, and customized sealing solutions for special working conditions. Founded in 2008, we began with advanced filled PTFE seals and have grown into a full-service Custom O-rings manufacturer committed to performance, longevity, and precision.

Production Capacity & Advanced Facilities

Our custom rubber ring and O-ring factory spans over 10,000 square meters with an 8,000 square meter production space. Equipped with industry-leading production and testing equipment, Polypac delivers consistent quality at scale—ideal for prototype runs to high-volume production. Rapid tooling, tight tolerances, and full traceability ensure every O-ring meets specification.

Materials Expertise

We manufacture O-rings in a wide range of elastomers including NBR, FKM, silicone, EPDM, and FFKM, and continue to support specialty PTFE variants such as bronze-filled, carbon-filled, graphite PTFE, MoS₂-filled, and glass-filled PTFE. Our material development capability lets us tailor compound formulations for temperature extremes, chemical exposure, and abrasive environments.

R&D, Testing & Collaboration

As one of China’s largest seal developers, Polypac maintains long-term partnerships with universities and research institutions domestically and internationally. Our in-house testing and validation protocols—pressure, compression set, chemical resistance, and lifespan testing—ensure reliable performance in the field and compliance with industry standards.

Custom Solutions & Applications

Whether you need metric or imperial sizes, special cross-sections, or custom compounds for hydraulic, pneumatic, automotive, oil & gas, or food-grade applications, Polypac provides engineered solutions. Our team guides clients through design optimization, material selection, and production ramps to minimize risk and accelerate time-to-market.

Why Choose Polypac

Polypac combines deep material science, modern manufacturing, and responsive customer service to deliver high-performance O-rings. As your dedicated Custom O-rings manufacturer, we focus on durability, precision, and application-driven innovation—ensuring seals that work when failure isn’t an option.