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

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Polypac OEM Replacement Seal

Polypac OEM Replacement Seal delivers reliable, precision hydraulic and oil sealing with advanced materials and custom options. Built in a modern factory with strict testing, our seals ensure long-lasting performance in demanding conditions.

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Product Information

Product Overview

The Polypac OEM Replacement Seal is designed to be a drop-in replacement for hydraulic and oil sealing applications. It offers tight tolerances, dependable sealing performance, and long service life. Ideal for maintenance, repair and overhaul (MRO) tasks, this seal restores equipment reliability without costly redesigns.

Key Benefits

Direct OEM fit for many hydraulic and oil systems
Enhanced wear and chemical resistance
Improved sealing under pressure and temperature variation
Available in standard sizes and custom dimensions

Why Choose Polypac OEM Replacement Seal

Polypac is a scientific and technical manufacturer specializing in hydraulic seals, oil seals, and sealing materials. Founded in 2008, our factory spans over 10,000 m² with 8,000 m² of production space and advanced testing equipment. We partner with universities and research institutions to ensure continuous product improvement.

Trusted Experience

Starting from filled PTFE seals, Polypac expanded into O-rings and elastomer seals. Today we supply seals in multiple materials and formulations to meet diverse working conditions.

Materials & Compatibility

Polypac OEM Replacement Seal is available in common and specialty materials to match your system needs:

Available Materials

Filled PTFE (bronze, carbon, graphite, MoS₂, glass)
Elastomers: NBR, FKM (Viton), Silicone, EPDM, FFKM

These materials cover broad chemical compatibility, temperature ranges, and mechanical demands.

Custom Solutions & Quality Control

We offer tailored seals for special working conditions. Our production lines and inspection systems deliver consistent dimensions and performance. Every batch undergoes strict testing to meet durability, hardness and leakage standards.

Applications & Ordering

Polypac OEM Replacement Seals serve hydraulics, construction equipment, agriculture, industrial machinery, and more. For fast quotes, provide part numbers, dimensions or a sample. Our technical team supports material selection and installation guidance to ensure the best fit and longevity.

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Q&A

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 do I choose the right material for my sealing application?

Material selection depends on four key factors: Media: What fluid or gas will the seal contact? (e.g., petroleum oil, water, chemicals, steam) Temperature: What is the minimum and maximum operating temperature? Pressure: What is the system's operating pressure? Are there pressure spikes? Application: Is it a static, dynamic, or rotary seal? Example: NBR (Buna-N) is excellent for standard hydraulic oil, while FKM (Viton®) is needed for high temperatures or aggressive chemicals.

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 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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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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