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Chemical Resistant Piston Seal — Polypac Precision Sealing

Chemical Resistant Piston Seal — Reliable Sealing for Aggressive Fluids

Key Features

Polypac's Chemical Resistant Piston Seal is engineered for hydraulic and pneumatic systems exposed to aggressive chemicals, oils and solvents. Combining low friction, high wear resistance and dimensional stability, our seals maintain pressure integrity across wide temperatures and harsh media. The design reduces leakage, extends service intervals and improves system efficiency.

Advanced Materials

We offer a range of chemically compatible materials including filled PTFE variants (bronze, carbon, graphite, MoS₂, glass), FFKM, FKM, EPDM, NBR and silicone. Each Chemical Resistant Piston Seal is selected from these compounds to match fluid compatibility, temperature and pressure requirements, ensuring optimal performance and minimal swelling or degradation.

Typical Applications

Ideal for chemical processing, offshore hydraulics, food processing, pharmaceutical equipment, and specialty machinery where aggressive fluids or cleaning agents are present. Polypac seals perform reliably in reciprocating piston applications, valves and actuators requiring long-term chemical resistance.

Customization & Manufacturing

Founded in 2008, Polypac operates a 10,000+ m² facility with 8,000 m² factory space and industry-leading production and testing equipment. We specialize in tailored seal geometries, tight tolerance machining and bespoke compound formulation to deliver Chemical Resistant Piston Seal solutions for special working conditions and OEM requirements.

Quality Assurance & Testing

Our quality system includes material traceability, dynamic and static leakage testing, wear and compression set evaluation, and collaboration with universities and research institutes. Each batch undergoes rigorous inspection to meet international standards and ensure consistent field performance.

Why Choose Polypac

As a leading hydraulic seal manufacturer and oil seal supplier, Polypac combines decades of PTFE expertise with modern elastomer technology to deliver durable, cost-efficient Chemical Resistant Piston Seal solutions. Contact us for material selection guidance, rapid prototyping and scalable production tailored to your application.

Chemical Resistant Piston Seal Display

FAQ:

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 is the difference between a static seal and a dynamic seal?

A Static Seal is used between two surfaces that do not move relative to each other (e.g., pipe flanges, end caps). O-rings and gaskets are common static seals. A Dynamic Seal is used between surfaces that do move (e.g., piston and cylinder, rotating shaft). Rod seals, piston seals, and rotary shaft seals are designed for this purpose.

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.

Why did my O-ring fail prematurely?

Common causes of O-ring failure include: Chemical Incompatibility: Swelling, softening, or cracking due to fluid exposure. Improper Sizing: Using an incorrect size leads to over-compression or inadequate sealing force. Abrasion: Wear and tear from rough surface finishes or contaminated fluid. Extrusion: The seal is forced into the gap between metal parts under high pressure. Installation Damage: Nicks, cuts, or twists during assembly.

Table of Contents

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Chemical Resistant Piston Seal — Reliable Sealing for Aggressive Fluids
Key Features
Advanced Materials
Typical Applications
Customization & Manufacturing
Quality Assurance & Testing
Why Choose Polypac
Chemical Resistant Piston Seal Display

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