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Polypac O-Rings Wholesale & Bulk Supply — Reliable Custom Seals

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

Polypac O-Rings Wholesale & Bulk Supply

Precision O-Rings for Demanding Applications

Polypac delivers high-performance O-rings designed for hydraulic, pneumatic, chemical and high-temperature environments. Our product range covers standard sizes and precision-engineered custom rubber rings, offering excellent compression set, chemical resistance and dimensional stability. For customers seeking o-rings wholesale bulk supply, Polypac provides consistent quality, traceability and competitive pricing to support large-scale procurement.

Comprehensive Material Options

We manufacture O-rings from a wide selection of elastomers — including NBR, FKM, silicone, EPDM and High Quality FFKM — to match specific media compatibility and temperature requirements. Building on our legacy in filled PTFE (bronze, carbon, graphite, MoS2, glass-filled), we combine PTFE expertise with elastomeric seals for hybrid solutions where low friction and extreme wear resistance are required.

Factory Capacity and Advanced Testing

Polypac’s custom rubber ring and O-ring factory spans over 10,000 square meters with 8,000 m² of production space and industry-leading production and testing equipment. Our rigorous QA protocols and collaboration with universities and research institutes ensure every batch meets international standards for durability and performance.

Customized Solutions for Special Conditions

When off-the-shelf seals aren’t enough, our engineers develop tailored sealing solutions for extreme pressure, abrasive media or elevated temperatures. From material formulation to post-production testing, Polypac supports prototype development and volume production to minimize downtime and optimize equipment life.

Why Choose Polypac for Wholesale & Bulk Supply

Choosing Polypac means partnering with an award-winning manufacturer focused on reliability, technical innovation and responsive service. We offer scalable production, fast lead times, custom packaging and logistical support for global distribution — making us a premier option for businesses requiring o-rings wholesale bulk supply.

Ordering and Technical Support

Contact Polypac for material datasheets, cross-reference assistance and custom quotes. Our technical team provides application guidance to ensure you receive the right seal for performance, longevity and cost-efficiency.

o-rings wholesale bulk supply Display

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 (2)

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

FAQ:

What is the purpose of the metal spring in a rotary shaft seal?

The garter spring in a shaft seal (e.g., FSKR, SPGO types) provides a constant radial force on the sealing lip. This ensures consistent contact with the rotating shaft, compensating for minor wear, eccentricity, and vibration to prevent lubricant leakage.

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 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.

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.

Table of Contents

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Polypac O-Rings Wholesale & Bulk Supply
Precision O-Rings for Demanding Applications
Comprehensive Material Options
Factory Capacity and Advanced Testing
Customized Solutions for Special Conditions
Why Choose Polypac for Wholesale & Bulk Supply
Ordering and Technical Support
o-rings wholesale bulk supply Display

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