dbde24e1-4012-47b6-8db4-e89ee4ca5a70 - Polypac

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Polypac High Temperature Piston Rod Seal

Polypac’s High Temperature Piston Rod Seal offers reliable sealing for hydraulic systems operating in extreme heat. Made with advanced PTFE and elastomer options, it provides long life, low friction, and customizable solutions for demanding conditions.

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Product Information

High Temperature Piston Rod Seal — Polypac

Polypac presents a High Temperature Piston Rod Seal designed for hydraulic systems that face extreme heat, pressure, and frequent cycling. Built from advanced PTFE blends and high-performance elastomers, this piston rod seal minimizes leakage and wear while ensuring smooth rod movement.

Key Features

High-temperature resistance: engineered materials withstand elevated operating temperatures without hardening or losing sealing performance.
Low friction: PTFE-based faces reduce friction and improve energy efficiency in piston applications.
Durable construction: long service life under high pressure, high speed, and harsh environments.
Material options: available in bronze-filled PTFE, carbon PTFE, MoS₂-filled PTFE, and compatible elastomers like FKM, NBR, EPDM, and FFKM.
Customizable: tailored sizes and compound selections to match special working conditions.

Applications

Ideal for hydraulic cylinders in heavy machinery, construction equipment, injection molding, steel mills, and any system requiring a dependable piston rod seal under high temperature and severe duty. Our seals work well as rod seals, piston seals, and backup sealing elements.

Why Choose Polypac

Polypac is a scientific and technical hydraulic seal manufacturer and oil seal supplier focused on sealing material development and custom sealing solutions. Founded in 2008, our 10,000+ m² factory and 8,000 m² production space house advanced manufacturing and testing equipment. We began with filled PTFE products and expanded to a wide range of O-rings and rubber rings to meet diverse needs.

Choosing Polypac means you get rigorous quality control, collaboration with research institutes, and fast customization for special working conditions. We value your application requirements and provide expert support to select the right high-temperature piston rod seal for optimal performance and longevity.

Contact us for samples, material advice, and custom seals built to your specifications — trusted performance when it matters most.

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Frequently Asked Questions

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.

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.

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.

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.

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