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Polypac Custom O-Rings Manufacturer - Precision Seals for Extreme Conditions

O-Ring Assortment Kit - 500+Pcs NBR Buna-N Seals in AS568 Sizes (9)

Polypac — Your Reliable Custom O-Rings Manufacturer

Polypac is a scientific and technical hydraulic seal manufacturer and oil seal supplier with deep expertise in seal production, sealing material development, and customized sealing solutions for special working conditions. Founded in 2008 and rooted in PTFE innovation, Polypac operates a 10,000 m² facility (8,000 m² factory space) equipped with advanced production and testing systems. As a leading custom o-rings manufacturer, we combine materials science, precision manufacturing, and collaborative R&D with universities and research institutions to deliver dependable sealing performance.

Why Choose Polypac

We focus on reliability, traceability, and fast customization. Polypac's decades of experience in filled PTFE (bronze, carbon, graphite, MoS₂, glass) evolved into a broad elastomer portfolio. Our customers benefit from engineered compounds, tight tolerances, and solutions tailored to pressure, temperature, chemical exposure, and wear challenges. Choosing Polypac means partnering with a custom o-rings manufacturer that understands both standard and mission-critical sealing demands.

Materials & Capabilities

Polypac produces O-rings and rubber rings in NBR, FKM, silicone, EPDM, and FFKM, plus high-performance PTFE components developed from our original filled formulations. We optimize material selection for compatibility, compression set, permeability, and dynamic life to meet specific application specs — from hydraulic cylinders and rotary shafts to valves and downhole equipment.

Manufacturing & Quality Control

Our factory uses industry-leading molding, machining, and testing equipment to ensure consistent size, hardness, and sealing integrity. Rigorous inspection, material certification, and performance testing (compression set, aging, chemical resistance) support long-term reliability. Polypac's QA processes and documentation make us a trusted partner for OEMs and maintenance teams seeking certified custom o-rings manufacturer services.

Applications & Custom Solutions

We deliver solutions for hydraulic, pneumatic, automotive, petrochemical, marine, and industrial equipment. Whether you need custom sizes, specialty blends, or seals designed for extreme temperatures and aggressive media, Polypac engineers tailor designs and manufacturing plans to meet lifecycle and safety requirements.

Contact & Next Steps

Get a quote or technical consultation today. Work with Polypac — a proven custom o-rings manufacturer — to specify materials, prototypes, and production runs that reduce downtime and extend equipment life. Reach out for samples, drawings review, and rapid prototyping support.

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O-Ring Assortment Kit - 500+Pcs NBR Buna-N Seals in AS568 Sizes (1)

O-Ring Assortment Kit - 500+Pcs NBR Buna-N Seals in AS568 Sizes (3)

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.

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.

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.

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.

Table of Contents

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Polypac — Your Reliable Custom O-Rings Manufacturer
Why Choose Polypac
Materials & Capabilities
Manufacturing & Quality Control
Applications & Custom Solutions
Contact & Next Steps
custom o-rings manufacturer Display

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