O-ring 600x7 NBR 70 ShA

O-ring 600x7 NBR 70 ShA

O-ring 600x7 NBR 70 ShA is an elastomeric sealing ring with a nominal inside diameter of 600 mm and a cross-section of 7 mm. It is made from NBR (nitrile butadiene rubber) with a hardness of 70 Shore A. Due to its large 600 mm inside diameter, this size is suitable for appropriately designed sealing assemblies where the groove dimensions, medium, temperature and operating conditions are compatible with NBR.

Technical data

What does O-ring size 600x7 mean?

The designation 600x7 mm defines two basic dimensions:

• 600 mm - nominal inside diameter ID
• 7 mm - cross-section CS

The 600 mm dimension does not represent the outside diameter.

Based purely on nominal geometry, the approximate outside diameter is:

600 mm + 2 x 7 mm = 614 mm

For identification and ordering, however, the primary dimensions remain 600x7 mm: inside diameter x cross-section.

NBR material

NBR, or nitrile butadiene rubber, is a widely used elastomer for O-ring manufacture. It is commonly selected for sealing applications involving many mineral oils, greases and other media compatible with the particular NBR compound.

Material selection should not be based on the NBR designation alone. Chemical compatibility and operating limits also depend on the specific rubber compound, medium, temperature, exposure time and operating conditions.

What does 70 ShA mean?

70 ShA, or 70 Shore A, specifies the nominal hardness of the elastomer on the Shore A scale.

This is a commonly used hardness for NBR O-rings in many standard sealing applications. Hardness affects the deformation characteristics of the O-ring and its behaviour after installation in the groove.

An O-ring 600x7 NBR 70 ShA should therefore not automatically be replaced with a 90 ShA version simply because both products have the same 600x7 mm dimensions.

Applications of O-ring 600x7 NBR

An O-ring of this diameter can be used as a sealing element in appropriately designed technical connections, machinery, equipment and industrial installations.

A specific application should not be determined from the 600x7 mm dimensions alone. The operating medium, pressure, temperature, groove geometry and static or dynamic operating conditions must also be considered.

How to select an O-ring 600x7 NBR

Before ordering, verify:

• inside diameter: 600 mm
• cross-section: 7 mm
• material: NBR
• hardness: 70 ShA
• groove dimensions and geometry
• operating medium
• operating temperature
• pressure
• static or dynamic sealing conditions

Identical 600x7 mm dimensions do not automatically mean that O-rings made from different materials or with different hardness values are interchangeable.

Installation

The groove and mating surfaces should be clean before installation. The O-ring should not be twisted, cut or otherwise damaged during assembly.

Avoid pulling the elastomer across sharp edges, threads or burrs. With a large 600 mm inside diameter, particular attention should be paid to positioning the O-ring evenly around the entire circumference.

Alternative designations and search references

Natural alternative ways of identifying this specification include:

• O-ring 600x7 NBR 70 ShA
• O-ring NBR 600x7 mm 70 ShA
• O-ring 600x7 NBR 70 Shore A
• NBR O-ring 600x7 mm
• O-ring 600 x 7 NBR

These are alternative written forms of the same basic dimensional and material specification, not separate product variants.

FAQ

What are the dimensions of the O-ring 600x7 NBR?

The nominal inside diameter is 600 mm and the cross-section is 7 mm.

Does 600 mm refer to the outside diameter?

No. In the 600x7 mm designation, 600 mm is the nominal inside diameter and 7 mm is the cross-section.

What is the outside diameter of a 600x7 O-ring?

Based on nominal geometry, the outside diameter is approximately 614 mm. The O-ring is nevertheless identified primarily by its inside diameter and cross-section.

What does NBR mean?

NBR stands for nitrile butadiene rubber, an elastomer widely used for technical sealing elements and O-rings.

What does 70 ShA mean?

70 ShA specifies a nominal elastomer hardness of 70 Shore A.

Can an O-ring 600x7 NBR be replaced with an O-ring 600x7 FKM?

Not automatically. Although the nominal dimensions are identical, NBR and FKM have different material properties and chemical resistance. The material must be selected according to the operating medium and conditions.

Are 600x7 NBR 70 ShA and 600x7 NBR 90 ShA the same product?

No. They have the same nominal dimensions and may both be NBR, but they have different hardness values. The correct hardness depends on the sealing system and operating conditions.

O-ring 600x7 NBR 70 ShA - key information

O-ring 600x7 NBR 70 ShA is an elastomeric sealing ring with a nominal inside diameter of 600 mm and a 7 mm cross-section. It is manufactured from nitrile butadiene rubber with a hardness of 70 Shore A. Correct selection requires consideration of the groove geometry, medium, temperature, pressure and operating conditions.