NBR 70 O-Ring 5.23x2.62 mm

Product Overview

The 5.23x2.62 mm NBR 70 O-Ring is a premium-quality sealing ring manufactured from Nitrile Butadiene Rubber (NBR) with a hardness of 70 Shore A. Designed for reliable sealing in static and dynamic applications, it provides excellent resistance to mineral oils, greases, hydraulic fluids and compressed air.

This product is supplied in a pack of 100 pieces, making it an excellent solution for service workshops, maintenance departments, repair facilities, small production runs and professional users. Compared with industrial bulk packs, the 100-piece package offers a practical quantity for regular maintenance and replacement work without the need to purchase large-volume packaging.

With an inside diameter of 5.23 mm and a 2.62 mm cross-section, this O-ring is suitable for hydraulic systems, pneumatic equipment, pumps, valves, compressors, automotive components and a wide range of industrial machinery.

Technical Specifications

Key Features

The 5.23x2.62 NBR 70 O-Ring offers:

• Premium-quality NBR material
• 70 Shore A hardness
• Excellent resistance to mineral oils
• Good resistance to greases and hydraulic fluids
• Reliable sealing performance
• High abrasion resistance
• Long service life
• Flexible and durable construction
• Easy installation
• Practical pack of 100 pieces
• Suitable for professional and industrial applications

Typical Applications

The 5.23x2.62 mm NBR O-Ring is commonly used in:

• Hydraulic systems
• Pneumatic equipment
• Hydraulic cylinders
• Pneumatic cylinders
• Pumps
• Valves
• Compressors
• Automotive components
• Agricultural machinery
• Industrial machinery
• Maintenance and repair operations
• OEM equipment servicing

Material Properties – NBR 70 Shore A

NBR (Nitrile Butadiene Rubber) provides:

• Excellent resistance to mineral oils
• High resistance to greases
• Good resistance to hydraulic fluids
• High mechanical strength
• Excellent abrasion resistance
• Reliable sealing performance
• Cost-effective durability

Why Choose NBR O-Rings?

NBR is one of the world's most widely used sealing materials because it combines:

• Excellent oil resistance
• Long service life
• High elasticity
• Reliable sealing performance
• Easy installation
• Outstanding value for money

Frequently Asked Questions (FAQ)

What are the O-ring dimensions?

The O-ring measures 5.23 mm inside diameter × 2.62 mm cross-section.

What does NBR 70 mean?

It indicates that the O-ring is manufactured from Nitrile Butadiene Rubber (NBR) with a hardness of 70 Shore A.

How many O-rings are included?

Each package contains 100 pieces.

What media is NBR resistant to?

NBR provides excellent resistance to mineral oils, greases, hydraulic fluids, water and compressed air.

Where is this O-ring commonly used?

It is widely used in hydraulic systems, pneumatic equipment, pumps, valves, automotive components and industrial machinery.

Frequently Asked Questions from Engineers

Why choose a 100-piece package?

A 100-piece pack is ideal for maintenance departments, workshops and professional users who need regular replacement parts without purchasing industrial bulk quantities.

What are the most common causes of O-ring failure?

• Incorrect sizing
• Improper installation
• Twisting during assembly
• Excessive pressure
• Chemical incompatibility
• High operating temperatures
• Mechanical damage

How can O-ring service life be extended?

Lubricate the O-ring before installation, use the correct groove dimensions, avoid twisting during assembly and select the proper elastomer for the intended operating conditions.