Polypac Elastomer Diaphragms — Precision Sealing Solutions

Elastomer Diaphragms by Polypac

Overview

Polypac specializes in precision Elastomer Diaphragms engineered for hydraulic, pneumatic, and fluid control systems. Founded in 2008, we evolved from PTFE-filled seal production to a full spectrum of elastomer sealing solutions. Our diaphragms combine flexible design with chemical and mechanical resilience to meet strict performance and safety requirements.

Materials & Performance

We produce Elastomer Diaphragms in NBR, FKM, silicone, EPDM, and FFKM to deliver tailored resistance to oils, fuels, high temperatures, and aggressive media. From low-permeability NBR for oil sealing to FFKM for extreme chemical environments, each material is selected to maximize diaphragm elongation, fatigue life, and sealing reliability under cyclical loading.

Custom Manufacturing Capacity

Polypac’s custom rubber ring and O-ring factory covers more than 10,000 square meters with 8,000 m² of factory space and industry-leading production and testing equipment. We offer precision molding, extrusion, and finishing for complex diaphragm geometries, rapid prototyping and volume production to exact tolerances required by critical systems.

R&D, Quality & Testing

As a technical seal manufacturer, Polypac maintains long-term partnerships with universities and research institutions at home and abroad, ensuring continuous material development and validation. Our QA procedures include dimensional control, accelerated aging, media compatibility, and dynamic fatigue testing to guarantee consistent performance in special working conditions.

Applications

Our Elastomer Diaphragms are deployed across hydraulic actuators, valves, pumps, gas meters, medical devices, and industrial instrumentation where reliable isolation and flexible motion are essential. We also provide PTFE-filled seal expertise (bronze, carbon, graphite, MoS₂, glass) for hybrid solutions combining low friction and chemical resistance.

Why Choose Polypac

Polypac offers end-to-end sealing solutions: material selection support, custom design, high-capacity manufacturing, and stringent testing. Choose us for durable elastomer diaphragms that reduce downtime, extend service life, and perform in the harshest environments.