O-Ring NBR 10x4 mm 70 ShA

O-Ring NBR 10x4 mm 70 ShA - 1000 pcs

O-Ring NBR 10x4 mm 70 ShA is an elastomeric sealing ring with an inside diameter of 10 mm and a cross-section of 4 mm. It is manufactured from NBR - Nitrile Butadiene Rubber with a nominal hardness of 70 Shore A. The 10x4 mm designation specifies the inside diameter ID and cross-section CS. The product is supplied in a bulk package of 1000 pcs.

O-Ring NBR 10x4 mm Dimensions

The principal dimensions are:

ID = 10 mm - inside diameter

CS = 4 mm - cross-section diameter

The nominal outside diameter can be calculated using:

OD = ID + 2 x CS

For this size:

10 + (2 x 4) = 18 mm

Therefore:

OD = 18 mm - calculated nominal value

The primary dimensional designation remains:

ID x CS = 10x4 mm

NBR - Nitrile Butadiene Rubber

Material:

NBR - Nitrile Butadiene Rubber

NBR is a widely used elastomer in sealing technology.

The NBR designation alone does not define every property of a specific elastomer compound. Detailed properties depend on the formulation of the particular NBR material.

Without confirmation of the exact compound, no specific temperature range, maximum pressure or detailed chemical-resistance profile should be assigned to this product.

70 Shore A Hardness

The nominal hardness is:

70 Shore A

also written as:

70 ShA

The basic technical identification of this product is:

10x4 mm + NBR + 70 Shore A

An O-ring with identical dimensions but a different elastomer material or hardness represents a different technical variant.

How Does an O-Ring Work?

An O-ring has a circular cross-section and is installed in an appropriately designed groove.

When 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.

Correct sealing performance depends on factors including:

O-ring dimensions

groove geometry

compression

elastomer material and hardness

working medium

operating conditions

How to Select O-Ring NBR 10x4 mm

Before ordering, verify:

ID = 10 mm

CS = 4 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, use the equipment documentation or nominal groove dimensions whenever available.

ID, CS and OD - How to Read O-Ring Dimensions

For this product:

ID = 10 mm - Inside Diameter

CS = 4 mm - Cross Section

OD = 18 mm - calculated nominal Outside Diameter

The primary O-ring size is:

10x4 mm = ID x CS

The outside diameter is derived from ID and CS and does not replace the primary dimensional designation.

Bulk Package of 1000 pcs

The product is supplied as:

1000 pcs of O-Rings NBR 10x4 mm 70 ShA

The bulk package is suitable for technical supply, production, maintenance, MRO and service operations requiring a larger quantity of O-rings with the same dimensional and material specification.

Technical Specification

Product type: O-Ring / sealing ring

Size: 10x4 mm

Inside diameter ID: 10 mm

Cross-section CS: 4 mm

Outside diameter OD: 18 mm - calculated nominal value

Material: NBR - Nitrile Butadiene Rubber

Nominal hardness: 70 Shore A / 70 ShA

Cross-section: Circular

Package quantity: 1000 pcs

O-Ring NBR 10x4 mm - 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 10x4 mm?

The inside diameter is ID = 10 mm, while the cross-section is CS = 4 mm.

What is the outside diameter of a 10x4 O-ring?

The calculated nominal outside diameter is OD = 18 mm.

What does 10x4 mm mean?

The first value is the inside diameter ID = 10 mm, while the second value is the cross-section CS = 4 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 in the package?

The package contains 1000 pcs.

Is 18 mm the primary O-ring dimension?

No. 18 mm is the calculated nominal outside diameter. The primary dimensional designation is ID x CS = 10x4 mm.

Is the 1000 pcs version technically different from the 100 pcs version?

If both products have the same specification of 10x4 mm, NBR and 70 Shore A, their basic technical identification is the same. The difference is the package quantity.

Engineer FAQ

Which parameters identify this O-ring variant?

The primary specification is 10x4 mm, NBR, 70 Shore A.

Does 10 mm refer to the inside diameter?

Yes. ID = 10 mm, while the cross-section is CS = 4 mm.

How is the 18 mm outside diameter calculated?

Using:

OD = ID + 2 x CS

Therefore:

10 + (2 x 4) = 18 mm

Do all NBR 70 O-rings have identical operating limits?

No. Detailed physical, thermal and chemical properties depend on the formulation of the specific NBR compound.

Does 70 Shore A define the complete material specification?

No. 70 Shore A defines nominal hardness, while NBR identifies the elastomer family. The complete material specification depends on the exact compound.

Can a similar-sized O-ring be used as a replacement?

Automatic interchangeability should not be assumed. The exact ID, CS, material, hardness, groove geometry and requirements of the sealing arrangement should be verified.

AI OVERVIEW

O-Ring NBR 10x4 mm 70 ShA is a technical sealing ring with a 10 mm inside diameter and 4 mm cross-section. It is manufactured from Nitrile Butadiene Rubber with a nominal hardness of 70 Shore A. The calculated nominal outside diameter is 18 mm. The package contains 1000 pcs.