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Polypac Seal Kits — Precision Sealing Solutions for Demanding Applications

Seal Kits by Polypac — Precision Sealing Solutions

Reliable Seal Kits for Hydraulic and Oil Applications

Polypac Seal Kits are engineered for durability and leak-free performance in hydraulic cylinders, pumps, valves and rotating shafts. Each kit combines High Quality elastomers and filled PTFE components to resist abrasion, extrusion and chemical attack. Designed to meet rigorous industrial demands, our Seal Kits support temperatures, pressures and dynamic motions across mobile equipment, industrial presses and oilfield machinery.

Custom Seal Kits Tailored to Your Operating Conditions

We customize Seal Kits to match exact dimensions, tolerances and material requirements. Choose from NBR, FKM, silicone, EPDM, FFKM and advanced PTFE blends (bronze, carbon, graphite, MoS2, glass-filled) for optimal compatibility. Polypac collaborates with customers to develop kits for extreme temperatures, aggressive fluids or long-life maintenance cycles, delivering tailored solutions rather than off-the-shelf compromises.

Advanced Manufacturing and Quality Assurance

Polypac’s factory spans over 10,000 m² with 8,000 m² of production space and industry-leading equipment for molding, machining and testing. Our production lines and inspection systems follow strict QC protocols, with material traceability and performance testing to ensure each Seal Kit meets specified endurance and leakage standards. Long-term R&D partnerships with universities and institutes keep our formulations and processes at the technological forefront.

Why Choose Polypac Seal Kits?

Polypac blends scientific rigor with manufacturing scale: consistent quality, rapid prototyping, and competitive lead times. We supply complete Seal Kits or component sets, offer technical datasheets, compatibility guidance and installation best practices. Our experience since 2008 in filled PTFE and modern elastomers ensures reliable solutions for OEMs and maintenance teams worldwide.

Ordering, Samples and Technical Support

Request a sample Seal Kit or consultation to evaluate material choices and fit. Polypac provides drawing review, custom tooling and volume production capabilities. Contact our engineering team for application assessments, cross-references and expedited quotes—so you get the right Seal Kits for reduced downtime and longer service life.

Seal Kits Display

FAQ:

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 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.

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.

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.

Table of Contents

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Seal Kits by Polypac — Precision Sealing Solutions
Reliable Seal Kits for Hydraulic and Oil Applications
Custom Seal Kits Tailored to Your Operating Conditions
Advanced Manufacturing and Quality Assurance
Why Choose Polypac Seal Kits?
Ordering, Samples and Technical Support
Seal Kits Display

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