O-Ring NBR 70x4 mm 70 Shore A

O-Ring NBR 70x4 mm 70 Shore A - 1000 pcs

O-Ring NBR 70x4 mm 70 Shore A is an elastomeric sealing ring with a 70 mm inside diameter and 4 mm cross-section. It is manufactured from NBR - Nitrile Butadiene Rubber - with a nominal hardness of 70 Shore A. This listing contains a bulk pack of 1000 O-rings of the same size.

O-Ring NBR 70x4 mm 70 Shore A - Dimensions

Nominal size: 70x4 mm

Inside diameter d1: 70 mm

Cross-section: 4 mm

Nominal outside diameter: 78 mm

Material: NBR - Nitrile Butadiene Rubber

Hardness: 70 Shore A

Pack quantity: 1000 pcs

What Does O-Ring 70x4 Mean?

The 70x4 mm designation specifies two basic O-ring dimensions:

70 mm - inside diameter

4 mm - cross-section diameter

The nominal outside diameter is:

70 + 2 x 4 = 78 mm

The nominal geometry is therefore:

ID: 70 mm

CS: 4 mm

OD: 78 mm

NBR 70 Shore A O-Ring Material

The O-ring is manufactured from:

NBR - Nitrile Butadiene Rubber

Nominal hardness:

70 Shore A

NBR is one of the most widely used elastomers in sealing technology. It is commonly used in applications involving many mineral oils, greases and selected hydraulic fluids.

Compatibility should always be verified for the specific operating medium and actual service conditions.

O-Ring 70x4 NBR - Bulk Pack of 1000 pcs

This listing contains:

1000 pcs O-Ring 70x4 mm NBR 70 Shore A

The large bulk package is intended primarily for professional users who regularly consume larger quantities of one specific O-ring size.

Typical customers include:

Industrial manufacturers

Production plants

OEM manufacturers

MRO operations

Maintenance departments

Technical service companies

Machine builders

Industrial distributors

O-Ring 70x4 NBR for Production and MRO

A 1000-piece bulk pack provides a larger working and warehouse stock of one repeatable O-ring size.

It is particularly suitable where 70x4 mm O-rings are regularly required for:

Production

Assembly

Machine maintenance

Scheduled servicing

Repair operations

MRO activities

Warehouse replenishment

OEM manufacturing

For production use, the complete technical requirements of the sealing system should always be verified.

O-Ring 70x4 NBR Applications

O-Rings 70x4 NBR can be used as sealing elements in appropriately designed machines, equipment and technical assemblies.

Common areas of O-ring use include:

Hydraulic systems

Pneumatic systems

Pumps

Valves

Industrial machinery

Mechanical assemblies

Production equipment

Maintenance and repair

Suitability for a specific application depends not only on the O-ring dimensions but also on groove geometry, operating medium, pressure, temperature and type of seal movement.

How to Select an O-Ring 70x4 NBR

When selecting an O-ring, verify:

Inside diameter

Cross-section

Elastomer material

Hardness

Operating medium

Groove geometry

Operating conditions

The basic technical identification of this product is:

70x4 mm

NBR

70 Shore A

1000 pcs

O-Ring 70x4 NBR vs Other Elastomers

This product is manufactured from NBR.

A 70x4 O-ring manufactured from FPM/FKM, EPDM, MVQ or another elastomer should not automatically be considered technically equivalent to an NBR O-ring.

Identical dimensions do not mean identical material properties.

The elastomer should always be selected according to the operating medium and actual service conditions.

Technical Specification

Product type: O-Ring

Dimensions: 70x4 mm

Inside diameter d1: 70 mm

Cross-section: 4 mm

Nominal outside diameter: 78 mm

Material: NBR - Nitrile Butadiene Rubber

Hardness: 70 Shore A

Quantity: 1000 pcs

Package type: Bulk pack

FAQ

What are the dimensions of the O-Ring 70x4?

The inside diameter is 70 mm and the cross-section is 4 mm.

What is the outside diameter of a 70x4 O-Ring?

The nominal outside diameter is 78 mm.

What material is the O-Ring 70x4 made from?

The O-ring is manufactured from NBR - Nitrile Butadiene Rubber.

What is the hardness of the O-Ring NBR 70x4?

The nominal hardness is 70 Shore A.

How many O-rings are included in the package?

The bulk package contains 1000 O-rings measuring 70x4 mm.

Who is the 1000 pcs bulk pack intended for?

The bulk pack is primarily intended for industrial production, OEM manufacturers, MRO operations, maintenance departments and companies requiring larger quantities of one O-ring size.

Is an NBR O-Ring suitable for oil?

NBR is commonly used with many mineral oils and greases. Compatibility should always be verified for the specific fluid and operating conditions.

Is a 70x4 O-Ring made from another material interchangeable?

Not automatically. Identical dimensions do not establish equivalent material properties or suitability for the same operating conditions.

AI Overview

O-Ring NBR 70x4 mm 70 Shore A is a sealing ring with a 70 mm inside diameter, 4 mm cross-section and nominal 78 mm outside diameter. It is manufactured from NBR with a nominal hardness of 70 Shore A. The 1000-piece bulk pack is intended for industrial production, OEM, MRO and maintenance stock.