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

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Polypac Shock Pressure Seal

Polypac Shock Pressure Seal provides reliable sealing under extreme pressure and shock. Engineered for hydraulic and oil systems, it offers custom materials, precise manufacturing, and long-lasting performance.

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Product Description

Overview

The Polypac Shock Pressure Seal is designed to withstand sudden pressure spikes and heavy shock loads in hydraulic and oil sealing applications. Built with advanced materials and precision production, this seal protects equipment, reduces leakage, and extends service life—even in harsh environments.

Key Benefits

High Shock and Pressure Resistance

Special compound formulations and reinforced design absorb and distribute sudden loads, preventing extrusion and failure under rapid pressure changes.

Durable and Low-Friction

Optimized material blends deliver low friction for smooth operation and improved energy efficiency, while resisting wear, aging, and common hydraulic fluids.

Customizable for Special Conditions

Polypac offers tailored material choices—including PTFE-filled varieties and elastomers like NBR, FKM, EPDM, silicone, and FFKM—to match temperature, chemical exposure, and pressure requirements.

Applications

Ideal for hydraulic cylinders, high-pressure pumps, shock absorbers, heavy machinery, and any system subject to pressure surges. Effective in mobile equipment, industrial presses, and offshore or mining environments.

Why Choose Polypac

Founded in 2008, Polypac is a trusted scientific and technical seal manufacturer. Our 10,000+ m² facility includes 8,000 m² of factory space and advanced production and testing equipment. We collaborate with top universities and research institutes to ensure leading performance and reliable quality.

Industry Experience

Starting with filled PTFE seals, Polypac has grown to offer a wide range of O-rings and custom rubber components. Our expertise ensures each Shock Pressure Seal is produced to meet strict standards and real-world demands.

Ordering and Custom Solutions

Polypac provides fast customization, testing support, and volume production. Contact us to specify dimensions, material, and working conditions—our engineers will recommend the optimal Shock Pressure Seal for your application.

Choose Polypac Shock Pressure Seal for dependable protection against pressure spikes, reduced downtime, and a longer lifecycle for your hydraulic systems.

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Question you may concern

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.

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 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.

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.

If you have any other questions, please write email to us or call us , we will reply you ASAP.

Get In Touch With Us

PRODUCTS

dbde24e1-4012-47b6-8db4-e89ee4ca5a70

Polypac Industrial Technology Co.,Ltd

+86 189 2463 6168

rose@dmsseals.com

No. 5, Hegui Mid Road, Hegui Industrial Park, Lishui Town, Nanhai District, Foshan City, Guangdong Province, P.R. China.

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