O-Ring 22x2.5 NBR 70 ShA

O-Ring 22x2.5 NBR 70 ShA - Pack of 100 pcs

O-Ring 22x2.5 NBR 70 ShA - 100 pcs is a pack of technical sealing rings intended for repairs, servicing, machinery maintenance and maintaining a practical stock of one specific seal size. Each O-ring has a 22 mm inside diameter, 2.5 mm cross-section and 70 Shore A hardness. NBR, or nitrile butadiene rubber, provides good resistance to many mineral oils, lubricating greases and compatible technical fluids, making this size suitable for appropriately designed hydraulic, pneumatic and mechanical sealing applications.

Technical Specifications - O-Ring 22x2.5 NBR 70 ShA

Product type: O-Ring / sealing ring
Size: 22x2.5 mm
Material: NBR, nitrile butadiene rubber
Alternative material name: Buna-N
Hardness: 70 ShA / 70 Shore A
Inside diameter: 22 mm
Cross-section: 2.5 mm
Approximate outside diameter: 27 mm
Color: Black
Typical temperature range: approximately -30 to +100°C, depending on compound and operating conditions
Resistance: many mineral oils, lubricating greases and compatible technical fluids
Package quantity: 100 pcs

O-Ring 22x2.5 NBR 70 ShA for Service and Repair

The 100 pcs package provides a practical quantity for workshops, service operations and technical maintenance where the 22x2.5 mm size is required periodically.

The O-ring can be used in appropriately designed:

• valves
• pumps
• technical fittings
• manifolds
• hydraulic components
• pneumatic equipment
• machinery
• workshop equipment
• oil-lubricated assemblies

Final selection should consider groove geometry, O-ring compression, pressure, temperature and compatibility between NBR and the operating medium.

Why Choose NBR 70 ShA?

NBR, or nitrile butadiene rubber, is one of the most widely used elastomers for technical O-rings.

An important characteristic of NBR is its good resistance to many mineral oils and lubricating greases. This makes the material suitable for numerous mechanical, hydraulic and pneumatic sealing applications.

A hardness of 70 ShA provides a practical balance between elasticity and mechanical stability when the O-ring is installed in a correctly designed sealing groove.

Hydraulic Applications

O-Ring 22x2.5 NBR 70 ShA can be used in hydraulic systems operating with compatible mineral oil-based fluids.

Depending on the sealing design, it may be used in hydraulic valves, fittings, pump housings, manifolds and other components.

For higher-pressure applications, groove geometry, extrusion clearance and the possible requirement for a backup ring should also be considered.

Pneumatic Applications

NBR O-rings are also widely used in pneumatic equipment.

The 22x2.5 mm size may be used in correctly designed valves, connectors and other components operating with compressed air.

For dynamic sealing points, lubrication, friction, surface finish and movement conditions should also be considered.

100 pcs Pack for Workshop and Service Stock

A 100 pcs pack of O-Ring 22x2.5 NBR 70 ShA allows users to maintain a convenient stock of one specific sealing dimension without requiring a large bulk inventory.

This package is particularly suitable for:

• technical workshops
• machinery servicing
• repair stations
• equipment maintenance
• spare-parts storage
• maintenance departments

It is useful when the 22x2.5 mm size is required periodically for repairs and replacement work.

Understanding the 22x2.5 mm O-Ring Size

The designation 22x2.5 mm defines two fundamental dimensions:

22 mm: nominal inside diameter
2.5 mm: cross-section diameter

The nominal outside diameter is approximately 27 mm.

Both dimensions must be checked when selecting a replacement. An O-ring with a 22 mm inside diameter but a different cross-section should not automatically be considered interchangeable.

Selecting O-Ring 22x2.5 NBR 70 ShA

Before installation, verify:

Size: 22x2.5 mm
Material: NBR
Hardness: 70 ShA
Operating medium: compatible with NBR
Temperature: suitable for the specific NBR compound
Pressure: appropriate for the sealing arrangement
Groove: designed for a 2.5 mm cross-section

Selecting an O-ring only by its inside diameter can result in an incorrect cross-section and improper sealing compression.

Frequently Asked Questions

What does O-Ring 22x2.5 NBR 70 ShA mean?
22 mm is the nominal inside diameter, 2.5 mm is the cross-section diameter, NBR identifies nitrile butadiene rubber, and 70 ShA indicates the nominal elastomer hardness on the Shore A scale.

What is the outside diameter of O-Ring 22x2.5 NBR 70 ShA?
The nominal outside diameter is approximately 27 mm.

Is O-Ring 22x2.5 NBR 70 ShA resistant to oil?
NBR provides good resistance to many mineral oils and lubricating greases. Compatibility should still be verified for the specific fluid and operating temperature.

Can a 22x2.5 O-ring be replaced with a 22x2 O-ring?
Not automatically. Although both have a 22 mm inside diameter, their cross-sections differ. This affects groove fit and sealing compression.

What is the 100 pcs package intended for?
It is particularly suitable for repairs, servicing, machinery maintenance and maintaining a practical stock of one O-ring dimension.

Can O-Ring 22x2.5 NBR 70 ShA be used in hydraulic systems?
Yes, provided the fluid, pressure, temperature and groove design are suitable for an NBR O-ring of this size.

Is 70 ShA a common hardness for technical O-rings?
Yes. 70 Shore A is a commonly used hardness for NBR O-rings in general industrial sealing applications.