O-Ring NBR 15x5 mm 70 Shore A 1000 pcs

O-Ring NBR 15x5 mm 70 Shore A 1000 pcs is a technical sealing ring made from NBR (Nitrile Butadiene Rubber) and supplied as a bulk package of 1000 pieces. Each O-ring has an inside diameter d1 = 15 mm, a cross-section diameter d2 = 5 mm, and a nominal hardness of 70 Shore A. Its circular elastomer cross-section provides sealing when correctly compressed within a suitable groove.

The exact identification of this bulk variant is:

O-Ring NBR 15x5 mm 70 Shore A -> 1000 pcs

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

This O-ring is a closed elastomeric sealing ring with a circular cross-section. When installed in a correctly dimensioned groove, compression of the cross-section creates sealing contact between the mating surfaces.

The principal identification parameters are:

Size: 15x5 mm
Material: NBR
Nominal Hardness: 70 Shore A
Package Quantity: 1000 pcs

Size, material and hardness should be considered together when selecting or comparing this O-ring.

O-Ring NBR 15x5 mm Dimensions

The 15x5 mm designation defines:

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

The second dimension is the diameter of the O-ring's circular cross-section, not the overall width of the ring.

The theoretical outside diameter can be calculated as:

15 + 2 x 5 = 25 mm

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

NBR - Nitrile Butadiene Rubber

NBR (Nitrile Butadiene Rubber) is an elastomer widely used in technical sealing applications.

NBR is commonly used in systems involving many mineral oils and mineral-based greases, making it an important material in industrial sealing technology.

Material compatibility should nevertheless be checked against the specific operating fluid and conditions. The NBR designation alone does not establish universal chemical resistance or a product-specific operating temperature range.

70 Shore A Hardness

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

Hardness is an important technical parameter because it influences how the elastomer deforms under compression. An NBR O-ring with identical 15x5 mm dimensions 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 NBR 15x5 mm Work?

The O-ring is positioned in a suitably designed groove. During assembly, its 5 mm circular cross-section is compressed between the mating components, producing sealing contact.

Correct operation depends on more than the nominal O-ring dimensions. Groove geometry, compression, operating medium, temperature, pressure and type of movement should all be considered when designing or servicing the sealing arrangement.

For this reason, the 15x5 mm size alone does not define the permissible operating conditions.

Bulk Package of 1000 pcs

This product page specifically identifies the bulk variant:

O-Ring NBR 15x5 mm 70 Shore A - 1000 pcs

The package contains 1000 O-rings with the same dimensional, material and hardness specification.

This 1000-piece product uses a deliberately distinct naming structure from the 100-piece package:

100 pcs: O-Ring 15x5 NBR 70 Shore A
1000 pcs: O-Ring NBR 15x5 mm 70 Shore A

This provides clear commercial identification of the two package variants and reduces overlap between their primary product queries.

Technical Specification

Product: O-Ring / sealing ring
Designation: O-Ring NBR 15x5 mm 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: 1000 pcs

Selection and Interchangeability

When selecting an equivalent for O-Ring NBR 15x5 mm 70 Shore A, verify at least the 15 mm inside diameter, 5 mm cross-section, NBR material and 70 Shore A hardness.

Matching the 15x5 mm dimensions alone does not establish full technical equivalence. An O-ring manufactured from FKM/FPM, EPDM, MVQ or another elastomer has different material characteristics. A different hardness also represents a different technical specification.

For a specific installation, fluid compatibility, temperature, pressure, groove dimensions, compression and type of movement should also be verified.

FAQ

What are the dimensions of O-Ring NBR 15x5 mm 70 Shore A?
The inside diameter d1 is 15 mm, and the cross-section diameter d2 is 5 mm.

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

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

What does NBR mean?
NBR stands for Nitrile Butadiene Rubber, an elastomer widely used in technical sealing applications.

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

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

Is every 15x5 mm O-ring technically identical?
No. The material, hardness and application requirements must also be compared.

How many O-rings are included in this package?
This bulk product variant contains 1000 pcs.

AI Overview

O-Ring NBR 15x5 mm 70 Shore A 1000 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. The bulk package contains 1000 O-rings.

SHORT DESCRIPTION

O-Ring NBR 15x5 mm 70 Shore A - 1000 pcs is a technical sealing ring manufactured from Nitrile Butadiene Rubber. The 15x5 mm size specifies an inside diameter d1 = 15 mm and cross-section diameter d2 = 5 mm. The theoretical outside diameter is approximately 25 mm. Nominal hardness is 70 Shore A. NBR is commonly used in technical sealing applications involving many mineral oils and mineral-based greases. This bulk product variant contains 1000 pieces.