O-ring 10x2.4 NBR 70 ShA

Technical Specifications

The stated dimensions and hardness are based on the product designation. Exact dimensional tolerances, permissible operating temperatures, pressure limits and chemical compatibility must be verified for the specific NBR compound and operating conditions.

What Does O-ring 10x2.4 NBR 70 ShA - 100 pcs. Mean?

The designation provides the principal information required to identify the sealing ring:

• 10 mm – nominal inside diameter.

• 2.4 mm – nominal cross-sectional diameter.

• NBR – nitrile butadiene rubber, commonly used in oil sealing applications.

• 70 ShA – nominal elastomer hardness measured on the Shore A scale.

• 100 pcs. – number of O-rings supplied in one package.

The nominal outside diameter is calculated as:

The value of 14.8 mm is a calculated nominal dimension. It does not replace actual product measurements or manufacturer dimensional tolerance data.

Construction and Sealing Principle

The O-ring 10x2.4 mm NBR 70 ShA is a continuous elastomeric ring with a circular cross-section.

When installed in a correctly designed sealing groove and compressed between mating surfaces, the elastomer undergoes elastic deformation. The resulting contact pressure helps prevent leakage through the sealed connection.

Sealing performance depends on several factors:

• Sealing groove geometry and tolerances.

• Compression of the O-ring cross-section.

• Hardness and elasticity of the NBR compound.

• Surface finish of mating components.

• Operating pressure and temperature.

• Chemical compatibility with the sealed medium.

• Static or dynamic operating conditions.

The 2.4 mm cross-sectional diameter is an important selection parameter. It should not automatically be replaced with a 2.5 mm cross-section without checking the sealing groove design.

Properties of NBR 70 Shore A Rubber

NBR is a widely used elastomer in industrial sealing technology, particularly in applications involving many mineral oils, greases and selected technical fluids.

Typical characteristics of NBR include:

• Good resistance to many mineral oils.

• Compatibility with numerous mineral oil-based greases.

• Good elasticity within an appropriately selected temperature range.

• Mechanical resistance depending on the compound formulation.

• Suitability for selected hydraulic and pneumatic sealing systems.

• Limited resistance to ozone and prolonged outdoor exposure.

• Limited compatibility with certain solvents and chemical media.

The nominal hardness of 70 Shore A describes the elastomer's indentation hardness. It does not independently determine maximum working pressure, service life or permissible operating temperatures.

The exact properties of NBR depend on factors such as acrylonitrile content, curing system and additives.

NBR 70 ShA Compared with Other Elastomers

Changing the elastomer material requires verification of chemical compatibility, temperature limits, mechanical properties and operating conditions.

Alternative Designations and Search References

The product may appear in technical documentation and purchasing enquiries under the following descriptions:

• O-ring 10x2.4 NBR 70 ShA - 100 pcs.

• O-ring 10x2.4 mm NBR 70 Shore A

• NBR 70 O-ring 10x2.4 mm

• Nitrile rubber O-ring 10x2.4

• Sealing ring 10x2.4 NBR 70

• O-ring seal 10x2.4 NBR

• O-ring 10x2.4 NBR 70 ShoreA - 100 pcs.

These are descriptive designation variations, not verified manufacturer part numbers or confirmed OEM cross-references.

Selection and Interchangeability

Before selecting the O-ring 10x2.4 mm NBR 70 ShA, verify:

• Nominal inside diameter of 10 mm.

• Cross-sectional diameter of 2.4 mm.

• Nominal hardness of 70 Shore A.

• Sealing groove geometry and dimensional tolerances.

• Required compression ratio.

• Chemical compatibility of NBR with the operating medium.

• Operating temperature and pressure.

• Static or dynamic sealing requirements.

• Risk of elastomer extrusion into clearance gaps.

• Compression set requirements.

O-rings measuring 10x2.4 mm and 10x2.5 mm are not automatically interchangeable.

The difference in cross-sectional diameter may affect compression, groove filling and sealing performance.

O-rings with identical nominal dimensions but different hardness grades or elastomer materials are also not necessarily interchangeable.

Typical Applications

NBR 70 ShA O-rings may be considered for appropriately designed sealing applications, including:

• Equipment housings and covers.

• Selected oil-handling systems.

• Industrial valves and fittings.

• Certain hydraulic assemblies.

• Selected pneumatic systems.

• Technical connections requiring elastomeric sealing.

These are general applications of NBR 70 ShA sealing materials, not confirmed OEM applications for this particular O-ring 10x2.4 mm.

Packaging - 100 Pieces

The O-ring 10x2.4 mm NBR 70 ShA is supplied in packs containing 100 sealing rings.

This packaging quantity supports maintenance inventory planning, spare-part preparation and recurring assembly or servicing operations.

It is suitable for manufacturing companies, maintenance departments, technical facilities and wholesale industrial customers.

Upon delivery, the dimensions, material, hardness and quantity should be checked against the purchase documentation.

Installation and Storage

Before installation, clean the sealing groove and mating surfaces. Remove burrs, sharp edges and contamination that could damage the elastomer.

Install the O-ring without twisting, excessive stretching or mechanical damage to its cross-section.

If an assembly lubricant is required, it must be compatible with the NBR compound and the operating medium.

During storage, protect the O-rings from ozone, direct sunlight, contamination, excessive heat and permanent deformation.

FAQ - Frequently Asked Questions

1. What are the dimensions of the O-ring 10x2.4 NBR 70 ShA?

The nominal inside diameter is 10 mm, and the cross-sectional diameter is 2.4 mm. The calculated nominal outside diameter is 14.8 mm.

2. How many O-rings are included in one package?

Each package contains 100 pieces of O-ring 10x2.4 mm NBR 70 ShA.

3. What does NBR 70 ShA mean?

NBR stands for nitrile butadiene rubber, while 70 ShA indicates a nominal material hardness of 70 on the Shore A scale.

4. Is the O-ring 10x2.4 NBR 70 ShA resistant to oil?

NBR provides good resistance to many mineral oils. Compatibility with a specific oil or technical fluid must be verified.

5. Can a 2.4 mm cross-section be replaced with 2.5 mm?

Not without checking groove geometry, dimensional tolerances and required compression. A difference of 0.1 mm may affect sealing performance.

6. What is the operating temperature range of the O-ring 10x2.4 NBR 70 ShA?

The exact permissible operating temperature range depends on the NBR compound and has not been verified for this product.

7. Is NBR 70 ShA suitable for dynamic sealing applications?

It may be considered for certain dynamic applications, but groove geometry, friction, lubrication, movement speed and operating conditions must be evaluated.

8. Does a hardness of 70 Shore A indicate a specific pressure rating?

No. Shore A hardness alone does not determine maximum working pressure. Groove geometry, clearance gaps, temperature and compound properties are also important.

O-ring 10x2.4 NBR 70 ShA - Key Information

The O-ring 10x2.4 mm NBR 70 ShA is a nitrile rubber sealing ring with a nominal inside diameter of 10 mm, a cross-sectional diameter of 2.4 mm and a hardness of 70 Shore A. Its calculated nominal outside diameter is 14.8 mm. NBR is commonly used for sealing applications involving many oils and greases. Supplied in packs of 100 pieces.

The product is intended for industrial procurement through the specialist B2B industrial trading platform simmering.pl, with worldwide shipping from stock in Poland, subject to availability.