dbde24e1-4012-47b6-8db4-e89ee4ca5a70 - Polypac

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Polypac Hydraulic O-Ring Kits

Polypac Hydraulic O-Ring Kits provide reliable, long-lasting sealing for hydraulic systems. Made from premium rubber materials with custom options, advanced production, and strict quality control to meet demanding conditions.

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Product Description

Polypac Hydraulic O-Ring Kits

Polypac Hydraulic O-Ring Kits are designed to give dependable sealing performance in hydraulic systems. Our kits include rubber O-rings made from NBR, FKM, silicone, EPDM and FFKM, offering chemical resistance, wide temperature range and long service life. Ideal for repair, maintenance and OEM assembly, these kits reduce downtime and ensure smooth operation.

Why choose Polypac O-Ring Kits?

Proven quality: Polypac is a scientific and technical hydraulic seal manufacturer and oil seal supplier with decades of expertise. We began with filled PTFE seals and have grown into one of China’s largest seal producers.
Advanced production: Our custom rubber ring and O-ring factory covers over 10,000 m², with 8,000 m² of factory space and industry-leading production and testing equipment.
Material variety: Choose from NBR, FKM, silicone, EPDM, FFKM and specialty compounds for specific chemical or temperature needs.
Custom solutions: We work closely with universities and research institutions to develop tailored seals for special working conditions.

Key benefits

Reliable sealing: Optimized rubber formulas and precise molding reduce leakage risk in hydraulic systems.
Durability: High wear resistance and excellent compression set performance extend service life.
Fast delivery: Large-scale production supports quick lead times for standard kits and custom orders.
Easy selection: Kits available in common sizes and materials for pumps, cylinders, valves and fittings.

Applications

Polypac Hydraulic O-Ring Kits serve agriculture, construction, industrial hydraulics, mobile machinery and marine equipment. Whether for maintenance or new installations, our kits provide cost-effective, high-performance sealing.

Polypac combines material expertise, advanced equipment and a strong R&D network to deliver hydraulic seals you can trust. Contact us to request samples, custom compounds, or volume pricing. Protect your hydraulic systems with Polypac’s reliable O-rings today.

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Question you may concern

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.

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.

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.

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.

If you have any other questions, please write email to us or call us , we will reply you as soon as possible.

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PRODUCTS

dbde24e1-4012-47b6-8db4-e89ee4ca5a70

Polypac Industrial Technology Co.,Ltd

+86 189 2463 6168

rose@dmsseals.com

No. 5, Hegui Mid Road, Hegui Industrial Park, Lishui Town, Nanhai District, Foshan City, Guangdong Province, P.R. China.

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