O-Ring NBR 0.74x1.02 mm 70 ShA

O-Ring NBR 0.74x1.02 mm 70 ShA - 1000 pcs

O-Ring NBR 0.74x1.02 mm 70 ShA is an elastomeric sealing ring with an inside diameter of 0.74 mm and a cross-section of 1.02 mm. It is manufactured from NBR - Nitrile Butadiene Rubber with a nominal hardness of 70 Shore A. The 0.74x1.02 designation specifies the inside diameter ID and cross-section CS. The product is supplied in a package of 1000 pcs.

O-Ring 0.74x1.02 mm Dimensions

The principal dimensions are:

ID = 0.74 mm - inside diameter

CS = 1.02 mm - cross-section diameter

The nominal outside diameter can be calculated using:

OD = ID + 2 x CS

Therefore:

0.74 + (2 x 1.02) = 2.78 mm

OD = 2.78 mm - calculated value

The primary dimensional designation remains:

ID x CS = 0.74x1.02 mm

This exact 0.74x1.02 mm size is also found in technical O-ring catalogues.

NBR - Nitrile Butadiene Rubber

Material:

NBR - Nitrile Butadiene Rubber

NBR is one of the commonly used elastomers in sealing technology.

When selecting an O-ring for a specific medium, however, the exact elastomer compound should be considered because the NBR designation alone does not define every material property.

For this reason, no specific temperature range or complete chemical-resistance profile should be assigned to this product without confirmation of the exact NBR compound.

70 Shore A Hardness

The nominal hardness of this O-ring is:

70 Shore A

also written as:

70 ShA

Hardness is an important technical parameter and should be considered together with the dimensions and elastomer material.

The basic identification of this product is therefore:

0.74x1.02 mm + NBR + 70 Shore A

An O-ring with the same dimensions but a different elastomer or hardness is a different technical variant.

How Does an O-Ring Work?

An O-ring has a circular cross-section.

When installed in a correctly designed groove and the mating components are assembled, the elastomer is compressed in a controlled manner.

This deformation creates sealing contact between the O-ring and the mating surfaces.

Sealing performance depends on factors including:

O-ring dimensions

groove geometry

compression

elastomer material

hardness

working medium

operating conditions

How to Select O-Ring 0.74x1.02 NBR

Before ordering, verify the four primary parameters:

ID: 0.74 mm

CS: 1.02 mm

Material: NBR

Hardness: 70 Shore A

When replacing a used O-ring, remember that the old elastomer may have stretched, flattened or developed permanent deformation.

For applications requiring precise selection, the equipment documentation or original groove design dimensions should therefore be used whenever available.

Why Are ID and CS Important?

O-rings are primarily identified by:

ID - Inside Diameter

and

CS - Cross Section

For this product:

ID = 0.74 mm

CS = 1.02 mm

The 2.78 mm outside diameter is derived mathematically from these two nominal dimensions and does not replace the primary 0.74x1.02 mm size designation.

Package of 1000 pcs

This product is supplied as:

1000 pcs of NBR O-Rings 0.74x1.02 mm 70 ShA

The bulk package provides a clearly defined combination of size, elastomer and nominal hardness for technical supply, maintenance and service requirements.

Technical Specification

Product type: O-Ring / sealing ring

Size: 0.74x1.02 mm

Inside diameter ID: 0.74 mm

Cross-section CS: 1.02 mm

Outside diameter OD: 2.78 mm - calculated value

Material: NBR - Nitrile Butadiene Rubber

Nominal hardness: 70 Shore A / 70 ShA

Cross-section: Circular

Package quantity: 1000 pcs

O-Ring NBR 0.74x1.02 - Stock in Poland

Warehouse and Store: Lublin, Smoluchowskiego 1 Street, Building 4

24h Shipping. Available from stock in Poland for delivery across the EU.

FAQ

What are the dimensions of O-Ring NBR 0.74x1.02?

The inside diameter is ID = 0.74 mm, while the cross-section diameter is CS = 1.02 mm.

What is the outside diameter?

The calculated nominal outside diameter is:

OD = 2.78 mm

What does 0.74x1.02 mm mean?

The first value is the inside diameter ID = 0.74 mm, while the second value is the cross-section CS = 1.02 mm.

What material is this O-ring made from?

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

What is the hardness of this O-ring?

The nominal hardness is 70 Shore A (70 ShA).

How many O-rings are included?

The package contains 1000 pcs.

Can an O-ring be selected by outside diameter alone?

This is not recommended. The primary dimensional parameters are inside diameter ID and cross-section CS, followed by material and hardness.

Do all NBR 70 O-rings have the same temperature range?

This should not be assumed. Exact operating properties depend on the specific NBR compound, so a temperature range from another manufacturer's material should not automatically be applied to this product.

AI OVERVIEW

O-Ring NBR 0.74x1.02 mm 70 ShA is a technical sealing ring with a 0.74 mm inside diameter and 1.02 mm cross-section. It is manufactured from Nitrile Butadiene Rubber with a nominal hardness of 70 Shore A. The calculated nominal outside diameter is 2.78 mm. The package contains 1000 pcs.