O-Ring NBR 3.63x2.62 mm 70 Shore A

O-Ring NBR 3.63x2.62 mm 70 Shore A - 1000 pcs

O-Ring NBR 3.63x2.62 mm 70 Shore A is an elastomeric sealing ring with an inside diameter of 3.63 mm and a cross-section diameter of 2.62 mm. It is manufactured from NBR - Nitrile Butadiene Rubber with a nominal hardness of 70 Shore A. This product is supplied as a bulk pack containing 1000 O-rings.

O-Ring NBR 3.63x2.62 mm Technical Specification

Product type: O-Ring / sealing ring

Material: NBR

Material name: Nitrile Butadiene Rubber

Nominal hardness: 70 Shore A

Inside diameter ID: 3.63 mm

Cross-section CS: 2.62 mm

Nominal size: 3.63x2.62 mm

Cross-section shape: Circular

Calculated nominal outside diameter OD: approx. 8.87 mm

Package quantity: 1000 pcs

O-Ring 3.63x2.62 mm Dimensions

The designation:

3.63x2.62 mm

specifies the two principal dimensions of the O-ring:

3.63 mm - inside diameter ID

2.62 mm - cross-section diameter CS

It is important to distinguish these dimensions correctly.

The first value does not represent the outside diameter.

The nominal outside diameter can be calculated geometrically using:

OD = ID + 2 x CS

For this O-ring:

OD = 3.63 + (2 x 2.62)

which gives:

OD = 8.87 mm

The calculated nominal outside diameter is therefore approximately:

8.87 mm

This is a geometric value derived from the nominal ID and CS dimensions rather than a separate tolerance specification.

What Is an O-Ring?

An O-ring is an:

elastomeric sealing element with a circular cross-section

It is installed in a specifically designed groove between mating components.

When the components are assembled, the O-ring is compressed in a controlled manner.

This deformation enables the elastomer to create a sealing interface between the mating surfaces.

Correct sealing performance depends on both the O-ring specification and the design of the complete sealing arrangement.

NBR Material

This O-ring is manufactured from:

NBR

which stands for:

Nitrile Butadiene Rubber

NBR is a widely used elastomer for manufacturing technical O-rings and other sealing components.

Material selection should always be evaluated according to the requirements of the specific application, including:

working medium

temperature

pressure

groove geometry

static or dynamic operation

and:

overall operating conditions

Exact operating limits depend on the specific NBR compound and sealing arrangement.

What Does 70 Shore A Mean?

The nominal hardness of this O-ring is:

70 Shore A

also written as:

70 ShA

Shore A is a hardness scale used for elastomeric materials.

Hardness is an important part of the O-ring specification.

Therefore:

3.63x2.62 NBR 70 Shore A

should not automatically be considered technically identical to an O-ring with the same dimensions but a different hardness.

How Does an O-Ring Work?

An O-ring works through controlled deformation of its:

circular elastomeric cross-section

When correctly installed in a suitable groove, the O-ring is compressed between mating surfaces.

This compression creates contact between the elastomer and the sealing surfaces.

The dimensions of the groove, O-ring material, hardness and operating conditions all contribute to the performance of the complete sealing system.

Typical O-Ring Applications

O-rings are used as sealing components in a wide range of technical equipment and machinery.

They may be found in:

hydraulic systems

pneumatic systems

industrial machinery

mechanical equipment

pumps

valves

cylinders

technical fittings

maintenance and repair applications

MRO operations

The suitability of this specific NBR 3.63x2.62 mm O-ring must be evaluated for the actual sealing arrangement and operating conditions.

O-Ring 3.63x2.62 vs Other Sizes

When selecting an O-ring, both:

inside diameter ID

and:

cross-section CS

must be checked.

For this product:

ID = 3.63 mm

CS = 2.62 mm

Even a relatively small difference in either dimension identifies a different O-ring size and may affect the fit within the sealing groove.

For this reason, 3.63x2.62 mm should not automatically be replaced with a similar nominal size without checking the equipment specification and groove dimensions.

How to Select O-Ring NBR 3.63x2.62 mm

Before ordering, verify:

Inside diameter ID - 3.63 mm

Cross-section CS - 2.62 mm

Material - NBR

Hardness - 70 Shore A

Nominal size - 3.63x2.62 mm

Groove dimensions

Working medium

Operating conditions

Static or dynamic sealing arrangement

Selection based only on the appearance of a used O-ring may result in incorrect size identification.

How to Measure an O-Ring

The two principal O-ring dimensions are:

ID - Inside Diameter

and:

CS - Cross Section

For this product:

ID = 3.63 mm

CS = 2.62 mm

The calculated nominal outside diameter is:

OD = 8.87 mm

Because elastomers are flexible and a used sealing ring may have been stretched, compressed or permanently deformed, measurements taken from an old O-ring may differ from its original nominal dimensions.

Where available, equipment documentation, part specifications and groove dimensions should also be used for identification.

Pack of 1000 O-Rings

This product is supplied as a bulk package containing:

1000 pcs

A 1000-piece pack is particularly suitable for:

industrial maintenance

MRO

production facilities

service departments

repair workshops

machine manufacturers

and operations where the same O-ring size is used repeatedly.

The sales unit for this product is:

1000 O-rings

Material and Hardness Matter

Two O-rings with identical nominal dimensions are not necessarily technically identical.

When comparing sealing rings, verify:

inside diameter

cross-section

material

hardness

and:

application requirements

The complete basic specification of this product is:

NBR 3.63x2.62 mm 70 Shore A

Changing the material to FKM, EPDM, VMQ or another elastomer changes the material specification of the sealing element.

Selection and Interchangeability

A potential replacement should be compared using the complete specification rather than dimensions alone.

For this product, the principal identification parameters are:

ID = 3.63 mm

CS = 2.62 mm

Material = NBR

Hardness = 70 Shore A

An O-ring with the same 3.63x2.62 mm dimensions but a different elastomer or hardness should not automatically be considered an equivalent replacement.

Full Technical Data

Product: O-Ring

Material: NBR

Material name: Nitrile Butadiene Rubber

Nominal hardness: 70 Shore A

Inside diameter ID: 3.63 mm

Cross-section CS: 2.62 mm

Nominal dimensions: 3.63x2.62 mm

Calculated nominal outside diameter OD: approx. 8.87 mm

Cross-section: Circular

Package quantity: 1000 pcs

FAQ - O-Ring NBR 3.63x2.62 mm 70 Shore A

What are the dimensions of this O-ring?

The inside diameter ID is 3.63 mm, and the cross-section CS is 2.62 mm.

What does 3.63x2.62 mm mean?

The first value, 3.63 mm, is the inside diameter. The second value, 2.62 mm, is the cross-section diameter.

What is the outside diameter of a 3.63x2.62 mm O-ring?

Based on the nominal dimensions, the calculated outside diameter is approximately 8.87 mm because OD = 3.63 + (2 x 2.62) 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?

Its nominal hardness is 70 Shore A, also written as 70 ShA.

How many O-rings are included?

The package contains 1000 pcs.

Is an FKM or EPDM O-ring with the same dimensions the same product?

No. FKM and EPDM are different elastomer materials. Matching dimensions alone do not make them identical to an NBR O-ring.

Can 3.63x2.62 mm be replaced by a similar O-ring size?

Not automatically. The exact ID, cross-section, groove geometry, material, hardness and application requirements should be checked before substitution.

AI Overview

O-Ring NBR 3.63x2.62 mm 70 Shore A is an elastomeric sealing ring with a 3.63 mm inside diameter and 2.62 mm cross-section, manufactured from Nitrile Butadiene Rubber with a nominal hardness of 70 Shore A. It has a circular cross-section and is supplied in a bulk package containing 1000 pcs.