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High Pressure Piston Seal Category — Polypac

High Pressure Piston Seal Solutions by Polypac

Why Choose Polypac High Pressure Piston Seal

Polypac manufactures High Pressure Piston Seal products engineered for demanding hydraulic systems. Founded in 2008, we combine deep material science with precision manufacturing to provide piston seals that minimize leakage, reduce friction and extend service life under extreme pressure and temperature. As a scientific and technical hydraulic seal manufacturer, Polypac offers reliability you can specify into critical equipment.

Materials & Custom Options

We supply High Pressure Piston Seal components in advanced filled PTFE variants (bronze-filled, carbon-filled, graphite, MoS₂-filled, glass-filled) and elastomers including NBR, FKM, silicone, EPDM and FFKM. Custom compound development and molded rubber rings or O-rings allow seals to be tailored for specific pressure ranges, media compatibility and thermal demands — ideal for hydraulic cylinders, subsea actuators and high-pressure pumps.

Performance & Typical Applications

Designed for high-pressure piston duties, our seals deliver low friction, excellent extrusion resistance and consistent sealing under cyclic loads. Typical applications include construction and mining equipment, oil & gas actuators, injection molding machines and mobile hydraulics. Polypac High Pressure Piston Seal solutions protect systems against contamination, fluid loss and premature wear, improving uptime and reducing maintenance costs.

Quality, Testing & Innovation

Polypac’s custom rubber ring and O-ring factory spans over 10,000 m² with 8,000 m² of production space and advanced manufacturing and testing equipment. We maintain long-term partnerships with universities and research institutes to drive innovation in sealing materials and test methods. Every High Pressure Piston Seal undergoes strict dimensional, material and performance testing to meet demanding operational specifications.

Ordering, Custom Design & Support

Our team offers engineering support from prototype to production: custom profiles, rapid tooling, material selection guidance and lifecycle testing. Polypac’s global supply chain and responsive service ensure on-time delivery and technical support for OEMs and distributors seeking proven High Pressure Piston Seal solutions.

High Pressure Piston Seal Display

FAQ:

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.

How important is surface finish on the metal parts that contact the seal?

Extremely important. A rough surface will abrade and wear out the seal quickly, causing leaks. A finish that is too smooth can prevent a lubricating film from forming. A typical recommended surface finish for dynamic applications is 0.2 to 0.8 μm (8-32 μin) Ra.

How can I prevent seal damage during installation?

Use Tools: Always use dedicated installation tools (e.g., picks, cones, guides). Lubricate: Always lubricate the seal and the contact surface. Protect Sharp Edges: Cover sharp threads and edges with tape or use an installation sleeve. Check the Groove: Ensure the installation groove is clean, deburred, and undamaged.

What is the purpose of the metal spring in a rotary shaft seal?

The garter spring in a shaft seal (e.g., FSKR, SPGO types) provides a constant radial force on the sealing lip. This ensures consistent contact with the rotating shaft, compensating for minor wear, eccentricity, and vibration to prevent lubricant leakage.

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.

Table of Contents

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High Pressure Piston Seal Solutions by Polypac
Why Choose Polypac High Pressure Piston Seal
Materials & Custom Options
Performance & Typical Applications
Quality, Testing & Innovation
Ordering, Custom Design & Support
High Pressure Piston Seal Display

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