Polypac NBR O-Ring Bulk Kit — Wholesale Pack for Reliable Sealing

Polypac NBR O-ring bulk kit wholesale pack delivers dependable, oil-resistant sealing for hydraulic and industrial applications. Available in standard sizes, tested for quality, and offered in flexible wholesale quantities.

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Product Description

Polypac NBR O-Ring Bulk Kit — Wholesale Pack

Polypac NBR O-ring bulk kit is a cost-effective, ready-to-use selection of nitrile rubber O-rings designed for hydraulic, pneumatic, and general industrial sealing. Manufactured by Polypac, a trusted hydraulic seal and oil seal supplier, this wholesale pack is ideal for maintenance teams, OEMs, and distributors who need reliable, oil-resistant seals in volume.

Key Features

Material: NBR (nitrile rubber) for excellent resistance to oils, fuels, and hydraulic fluids.
Sizes: Standard AS568 sizes and common metric sizes included for quick replacement.
Durability: Good abrasion and compression resistance for long service life.
Tested Quality: Produced in Polypac's advanced facility with rigorous inspection and testing.
Wholesale Options: Available in flexible pack quantities to match repair shop or production needs.

Applications

These NBR O-rings are well suited for hydraulic cylinders, pumps, valves, gearboxes, and general-purpose sealing where oil and fuel compatibility is required. They are commonly used in automotive, industrial machinery, and maintenance kits.

Specifications & Performance

Polypac offers NBR O-rings in common hardness levels and a wide range of diameters and cross-sections. NBR provides reliable sealing in a typical operating temperature range suitable for many oil-based systems. Each batch undergoes dimensional checks and material testing to ensure consistent performance.

Why Choose Polypac

Polypac is a leading seal manufacturer with over a decade of experience in seal production and sealing material development. Our factory spans more than 10,000 square meters and uses advanced production and testing equipment. As a partner of universities and research institutions, we continuously improve materials and processes to deliver dependable sealing solutions.

Ordering & Support

Wholesale packs are available in multiple quantities and can be customized for specific size mixes. Polypac offers fast lead times, export-ready packaging, and technical support for selection and installation. Contact our sales team for samples, quotes, or bespoke kit configurations.

Choose Polypac NBR O-ring bulk kits for reliable, economical sealing backed by professional manufacturing and quality assurance.

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Q&A

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.

Can I reuse a seal?

We strongly recommend never reusing seals. Once compressed and used, a seal takes a "set" and its elastic properties are degraded. Reusing it almost always results in a leak. Always install a new seal during any maintenance or repair.

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 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.

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