O-Ring 36.2x3 NBR 70 Shore A

O-Ring 36.2x3 NBR 70 Shore A - 100 pcs

O-Ring 36.2x3 NBR 70 Shore A is an elastomeric sealing ring with an inside diameter of 36.2 mm and a cross-section of 3 mm. It is manufactured from NBR - Nitrile Butadiene Rubber with a nominal hardness of 70 Shore A. The 36.2x3 designation specifies the inside diameter ID and cross-section CS. The product is supplied in a package of 100 pcs.

O-Ring 36.2x3 mm Dimensions

The principal dimensions are:

ID = 36.2 mm - inside diameter

CS = 3 mm - cross-section diameter

The nominal outside diameter can be calculated using:

OD = ID + 2 x CS

For this size:

36.2 + (2 x 3) = 42.2 mm

Therefore:

OD = 42.2 mm - calculated nominal value

The primary dimensional designation remains:

ID x CS = 36.2x3 mm

NBR - Nitrile Butadiene Rubber

Material:

NBR - Nitrile Butadiene Rubber

NBR is a widely used elastomer in sealing technology.

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

For this reason, no specific temperature range, pressure limit or detailed 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 should be considered together with the O-ring dimensions and elastomer material.

The basic technical identification of this product is:

36.2x3 mm + NBR + 70 Shore A

An O-ring with identical dimensions but a different 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

hardness

working medium

operating conditions

How to Select O-Ring 36.2x3 NBR

Before ordering, verify four primary parameters:

ID = 36.2 mm

CS = 3 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 nominal groove dimensions should be used whenever available.

ID, CS and OD - O-Ring Dimensions

For this product:

ID = 36.2 mm - Inside Diameter

CS = 3 mm - Cross Section

OD = 42.2 mm - calculated nominal Outside Diameter

The primary O-ring size is:

36.2x3 mm

which means:

ID x CS

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

Package of 100 pcs

The product is supplied as:

100 pcs of O-Rings 36.2x3 mm NBR 70 Shore A

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

Technical Specification

Product type: O-Ring / sealing ring

Size: 36.2x3 mm

Inside diameter ID: 36.2 mm

Cross-section CS: 3 mm

Outside diameter OD: 42.2 mm - calculated nominal value

Material: NBR - Nitrile Butadiene Rubber

Nominal hardness: 70 Shore A / 70 ShA

Cross-section: Circular

Package quantity: 100 pcs

O-Ring 36.2x3 NBR - 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 36.2x3 NBR?

The inside diameter is ID = 36.2 mm, while the cross-section is CS = 3 mm.

What is the outside diameter?

The calculated nominal outside diameter is OD = 42.2 mm.

What does 36.2x3 mm mean?

The first value is the inside diameter ID = 36.2 mm, while the second value is the cross-section CS = 3 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 100 pcs.

Is 42.2 mm the primary O-ring dimension?

No. 42.2 mm is the calculated nominal outside diameter. The primary O-ring size is ID x CS = 36.2x3 mm.

Can an O-ring be selected by dimensions alone?

No. In addition to ID and CS, the elastomer material and hardness should be verified. The working medium, groove geometry and actual operating conditions should also be considered.

Engineer FAQ

Which parameters identify this O-ring variant?

The primary specification is 36.2x3 mm, NBR, 70 Shore A.

Does 36.2 mm refer to the outside diameter?

No. 36.2 mm is the inside diameter ID. The nominal cross-section is 3 mm.

Is the 42.2 mm OD a measured dimension?

In this specification, 42.2 mm is a calculated nominal value, obtained from ID + 2 x CS.

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

No. Exact operating properties depend on the formulation of the specific NBR compound.

Can a 36x3 O-ring replace a 36.2x3 O-ring?

Automatic interchangeability should not be assumed. The difference in inside diameter changes the O-ring fit and deformation in the sealing arrangement.

Does 70 Shore A define the complete NBR material specification?

No. 70 Shore A defines nominal hardness, while NBR identifies the elastomer family. The exact compound determines its detailed physical and chemical properties.

AI OVERVIEW

O-Ring 36.2x3 NBR 70 Shore A is a technical sealing ring with a 36.2 mm inside diameter and 3 mm cross-section. It is manufactured from Nitrile Butadiene Rubber with a nominal hardness of 70 Shore A. The calculated nominal outside diameter is 42.2 mm. The package contains 100 pcs.