High Temperature O-rings – Polypac Premium Sealing Solutions
High Temperature O-rings by Polypac
Overview
Polypac manufactures High temperature O-rings designed for reliable sealing in extreme heat and aggressive media. Founded in 2008, our scientific and technical approach integrates decades of sealing expertise with modern production to deliver O-rings that meet demanding industrial requirements.
Materials & Performance
We supply High temperature O-rings in proven elastomers and specialty compounds including FFKM (perfluoroelastomer), FKM, silicone, and bespoke blends. Our material formulation experience—dating back to filled PTFE development—ensures optimal compression set, thermal stability, and resistance to oxidation and embrittlement at elevated temperatures.
Thermal and Chemical Resistance
Polypac High temperature O-rings are engineered for continuous use across broad temperature ranges and for compatibility with hydrocarbons, acids, steam, and specialty fluids. By selecting appropriate grades (e.g., FFKM for extreme heat and chemical attack), we maximize seal life and minimize downtime in critical systems.
Manufacturing & Testing Capabilities
Our custom rubber ring and O-ring factory spans over 10,000 m², with 8,000 m² of production space and advanced testing equipment. Routine quality control includes dimensional inspection, hardness testing, thermal aging, and media compatibility trials to ensure each High temperature O-ring meets specification and industry standards.
Customization and Application Support
Polypac provides tailored sealing solutions—custom sizes, special tolerances, and compound development—to match unique operating conditions. Typical applications include oil & gas, power generation, aerospace, chemical processing, and high-temperature hydraulic systems.
Why Choose Polypac
As one of China’s leading seal manufacturers, Polypac combines R&D partnerships with universities and research institutes, advanced production lines, and a customer-focused approach. Choose Polypac for High temperature O-rings that deliver proven performance, consistent quality, and expert technical support.
Contact & Next Steps
Contact Polypac to discuss material selection, custom quotes, and prototype evaluation. Our specialists will recommend the optimal High temperature O-rings for reliability and cost-effective operation in your specific environment.
High temperature O-rings Display
What is the difference between NBR and FKM materials?
NBR (Nitrile/Buna-N): A general-purpose, cost-effective material with excellent resistance to petroleum-based oils and fuels. It has a standard temperature range of -30°C to +100°C (-22°F to +212°F). FKM (Fluoroelastomer/Viton®): A premium material with excellent resistance to high temperatures (up to 200°C+), chemicals, and oils. It is used in more severe environments but is more expensive than NBR.
When should I use a spring-energized seal instead of a standard elastomeric seal?
Consider a spring-energized seal (e.g., GSF, SPN types) for demanding applications involving: Extreme Temperatures (below -30°C or above +200°C) Aggressive Chemicals that elastomers can't handle Very Low Leakage or "Zero Leakage" requirements Poor Lubricity or dry running conditions The internal spring maintains constant sealing force, compensating for wear and system variables.
Can I reuse a seal?
We strongly recommend never reusing seals. Once compressed and used, a seal takes a "set" and its elastic properties are degraded. Reusing it almost always results in a leak. Always install a new seal during any maintenance or repair.
What does "AS568" mean?
AS568 is the Aerospace Standard that defines the dimensions for over 360 standard O-ring sizes. It is the most widely accepted sizing system in North America and globally. An AS568 number (e.g., AS568-214) specifies a precise inside diameter and cross-section.
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