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Polypac OEM Replacement Part Seals — Custom Hydraulic & Oil Seals

Polypac OEM Replacement Part Seals — Precision, Durability, Performance

Polypac is a scientific and technical hydraulic seal manufacturer and oil seal supplier that specializes in OEM Replacement Part solutions. Backed by more than a decade of research-driven experience, our seals and O-rings are engineered to meet demanding hydraulic, pneumatic, and rotary applications. Whether you require bronze-filled PTFE, carbon-filled PTFE, or modern elastomers like FKM and FFKM, Polypac delivers parts that match or exceed OEM specifications.

Advanced Manufacturing and Materials

Our custom rubber ring and O-ring factory spans over 10,000 square meters with 8,000 square meters of production space and industry-leading testing equipment. We produce OEM Replacement Part seals using optimized formulations — NBR, EPDM, silicone, FKM, FFKM — and filled PTFE variants including MoS2 and graphite. This ensures compatibility with hydraulic oils, aggressive chemicals, and extreme temperatures.

Custom Solutions for Special Working Conditions

Polypac collaborates closely with universities and research institutions to develop sealing materials and designs for unique environments. From low-friction PTFE components to chemically resistant FFKM O-rings, our engineers provide custom geometries, tolerances, and surface finishes tailored to your OEM Replacement Part requirements, reducing downtime and extending service life.

Quality Assurance and Certification

Every OEM Replacement Part undergoes rigorous dimensional inspection, hardness testing, and functional validation. Our production and testing capabilities are among the most advanced in the industry, ensuring consistent performance and traceability for critical applications in construction, agriculture, aerospace, and industrial hydraulics.

Why Choose Polypac?

Polypac combines scientific R&D with scalable manufacturing to offer competitive lead times, strict quality control, and flexible MOQ for OEM Replacement Part projects. Partner with us to access expert material selection, rapid prototyping, and ongoing technical support that helps your equipment run cleaner, longer, and more reliably.

OEM Replacement Part Display

FAQ:

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.

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.

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.

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.

Table of Contents

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Polypac OEM Replacement Part Seals — Precision, Durability, Performance
Advanced Manufacturing and Materials
Custom Solutions for Special Working Conditions
Quality Assurance and Certification
Why Choose Polypac?
OEM Replacement Part Display

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