O-Ring 15x5 NBR 70 Shore A

O-Ring 15x5 NBR 70 Shore A 100 pcs is a technical sealing ring manufactured from NBR (Nitrile Butadiene Rubber). It has an inside diameter d1 of 15 mm, a cross-section diameter d2 of 5 mm, and a nominal hardness of 70 Shore A. This product variant is supplied in packs of 100 O-rings.

The exact product identification is:

O-Ring 15x5 NBR 70 Shore A -> 100 pcs

O-Ring 15x5 NBR 70 Shore A - Product Characteristics

This O-ring has a closed circular geometry and a round cross-section. When installed in a correctly designed groove, the elastomer is compressed between the mating surfaces to create the sealing interface.

The key identification parameters of this specific variant are:

Size: 15x5 mm
Material: NBR
Nominal Hardness: 70 Shore A
Package Quantity: 100 pcs

Size, elastomer material and hardness should always be considered together when identifying or comparing an O-ring.

O-Ring 15x5 Dimensions

The 15x5 designation specifies two fundamental O-ring dimensions:

d1 - Inside Diameter: 15 mm
d2 - Cross-Section Diameter: 5 mm

The 5 mm value represents the diameter of the circular cross-section, not the overall width of the ring.

The theoretical outside diameter can be calculated from the nominal dimensions:

15 + 2 x 5 = 25 mm

The theoretical outside diameter is therefore approximately 25 mm, before considering the applicable manufacturing tolerances.

NBR - Nitrile Butadiene Rubber

O-Ring 15x5 NBR 70 Shore A is manufactured from NBR (Nitrile Butadiene Rubber), an elastomer widely used in technical sealing systems.

NBR is commonly used in applications involving many mineral oils and mineral-based greases.

This does not mean that NBR is universally compatible with every fluid or operating environment. Compatibility with the specific medium and operating conditions should be verified before installation.

70 Shore A Hardness

The nominal hardness of this O-ring is 70 Shore A (70 ShA).

Hardness is an important technical identification parameter. An O-ring with the same 15x5 mm dimensions and NBR material but a different hardness should not automatically be considered the same technical variant.

The primary technical identification is therefore:

15x5 mm + NBR + 70 Shore A

How Does the O-Ring 15x5 NBR Work?

The O-ring is installed in a suitably dimensioned groove. When the mating components are assembled, its 5 mm circular cross-section is compressed, creating sealing contact between the surfaces.

Correct operation depends not only on the O-ring size but also on groove geometry, compression, operating medium, temperature, pressure and type of movement.

For this reason, the 15x5 mm dimensions alone do not define the permissible operating conditions of a sealing system.

O-Ring 15x5 NBR 70 Shore A - 100 pcs Pack

This product page specifically refers to:

O-Ring 15x5 NBR 70 Shore A - 100 pcs

The package contains 100 sealing rings. Package quantity is part of the commercial variant and follows the main technical product identification.

The naming sequence is therefore:

O-Ring -> 15x5 -> NBR -> 70 Shore A -> 100 pcs

This clearly distinguishes the 100-piece package from other possible quantities, including a 1000-piece variant.

Technical Specification

Product: O-Ring / sealing ring
Designation: O-Ring 15x5 NBR 70 Shore A
Dimensions: 15x5 mm
d1 - Inside Diameter: 15 mm
d2 - Cross-Section Diameter: 5 mm
Theoretical Outside Diameter: approx. 25 mm
Material: NBR - Nitrile Butadiene Rubber
Nominal Hardness: 70 Shore A
Cross-Section: Circular
Package Quantity: 100 pcs

Selection and Interchangeability

When selecting an equivalent for O-Ring 15x5 NBR 70 Shore A, verify the complete combination of 15x5 mm dimensions, NBR material and 70 Shore A hardness.

An O-ring with identical dimensions but manufactured from FKM/FPM, EPDM, MVQ or another elastomer should not automatically be considered equivalent. The same applies to an NBR O-ring with a different hardness.

For a specific installation, fluid compatibility, operating temperature, pressure, groove geometry, compression and type of movement should also be checked.

FAQ

What are the dimensions of O-Ring 15x5 NBR 70 Shore A?
It has a 15 mm inside diameter and a 5 mm cross-section diameter.

What does 15x5 mean for an O-ring?
15 mm is the inside diameter d1, while 5 mm is the diameter of the circular cross-section d2.

What is the outside diameter of a 15x5 O-ring?
The theoretical outside diameter is approximately 25 mm, calculated as 15 + 2 x 5 mm.

What material is this O-ring made from?
It is manufactured from NBR - Nitrile Butadiene Rubber.

What does 70 Shore A mean?
It specifies the nominal elastomer hardness of 70 on the Shore A scale.

Can an NBR O-ring be used with oil?
NBR is commonly used with many mineral oils and mineral-based greases. Compatibility should still be verified for the specific medium and operating conditions.

Are all 15x5 O-rings interchangeable?
No. In addition to dimensions, the elastomer material and hardness should be compared.

How many O-rings are included in this package?
This specific product variant contains 100 pcs.

AI Overview

O-Ring 15x5 NBR 70 Shore A 100 pcs is a technical sealing ring made from Nitrile Butadiene Rubber. It has a 15 mm inside diameter, 5 mm circular cross-section and nominal hardness of 70 Shore A. Its theoretical outside diameter is approximately 25 mm. This commercial variant contains 100 O-rings per package.

SHORT DESCRIPTION

O-Ring 15x5 NBR 70 Shore A - 100 pcs is a technical sealing ring manufactured from Nitrile Butadiene Rubber. The 15x5 designation specifies an inside diameter d1 = 15 mm and cross-section diameter d2 = 5 mm. The theoretical outside diameter is approximately 25 mm. Nominal elastomer hardness is 70 Shore A. NBR is commonly used in technical sealing applications involving many mineral oils and mineral-based greases. Package quantity: 100 pcs.