O-Ring NBR 15x2 mm 70 ShA

O-Ring NBR 15x2 mm 70 ShA - 1000 pcs

O-Ring NBR 15x2 mm 70 ShA is a technical sealing ring with a 15 mm inside diameter and 2 mm cross-section, manufactured from Nitrile Butadiene Rubber (NBR) with a nominal hardness of 70 Shore A. Standard NBR compounds are widely used with many mineral oils, and a typical operating temperature range for NBR is approximately -30 C to +100 C. The product is supplied in a pack of 1000 pcs.

O-Ring NBR 15x2 mm 70 ShA - Technical Data

The stated temperature range describes typical properties of standard NBR compounds. The exact permissible temperature range for a specific O-ring depends on the compound formulation, medium, exposure time and actual operating conditions.

What Does O-Ring NBR 15x2 mm 70 ShA Mean?

The product designation defines its main technical characteristics:

15x2 mm - O-ring size

NBR - Nitrile Butadiene Rubber

70 ShA - nominal elastomer hardness on the Shore A scale

1000 pcs - quantity in the package

Correct identification should take into account all three technical parameters: size, material and hardness.

What Does 15x2 mm Mean?

For O-rings, the first value normally specifies the nominal inside diameter and the second value specifies the cross-section diameter.

For this product:

15 mm - inside diameter

2 mm - cross-section diameter

The nominal outside diameter can be calculated as:

15 mm + 2 x 2 mm = 19 mm

The resulting nominal outside diameter is therefore approximately 19 mm.

The primary size designation remains 15x2 mm, meaning inside diameter x cross-section.

NBR - Nitrile Butadiene Rubber

NBR is one of the most widely used elastomers for technical O-rings and other sealing components.

Standard NBR compounds generally provide good resistance to many:

• mineral oils,
• mineral oil-based greases,
• mineral oil-based hydraulic fluids,
• other technical media compatible with NBR.

NBR should not be considered universally resistant to every oil, fuel, gas or chemical.

Actual chemical resistance depends on the specific NBR compound, composition of the medium, additives, operating temperature and duration of exposure.

Compatibility should therefore be checked before using the O-ring with a specific operating medium.

What Does 70 ShA Mean?

70 ShA indicates the nominal hardness of the elastomer measured on the Shore A scale.

Approximately 70 Shore A is a commonly used hardness for technical NBR O-rings.

Hardness influences characteristics including:

• deformation under compression,
• behaviour inside the O-ring groove,
• contact with the sealing surfaces,
• resistance to deformation,
• behaviour under system pressure.

The 70 ShA value alone does not determine the maximum permissible operating pressure.

Pressure capability also depends on groove geometry, extrusion gap, temperature, medium, type of movement and the overall sealing arrangement.

NBR 70 ShA Operating Temperature

For standard technical NBR compounds, a typical operating temperature range is approximately:

-30 C to +100 C

Depending on the specific compound and operating conditions, short-term exposure may be possible at temperatures of approximately:

+120 C

+120 C should not be considered a recommended continuous operating temperature.

At elevated temperatures, elastomer ageing accelerates, which can affect hardness, elasticity and seal service life.

At low temperatures, NBR gradually loses flexibility, which can reduce its ability to maintain effective sealing contact.

For this reason, -30 C to +100 C should be treated as a typical material range for standard NBR rather than a certified operating range for an unidentified specific compound.

How Does a 15x2 mm O-Ring Work?

An O-ring is a closed elastomeric sealing ring with a circular cross-section.

It is installed in a correctly designed groove. When the mating components are assembled, the O-ring is compressed in a controlled manner.

This deformation creates contact between the elastomer and the mating surfaces, helping prevent leakage of the sealed medium.

Correct sealing performance depends not only on O-ring size but also on:

• groove geometry,
• O-ring compression,
• O-ring stretch,
• extrusion gap,
• surface finish,
• pressure,
• temperature,
• operating medium,
• static or dynamic operation.

The 15x2 mm dimensions alone are therefore not sufficient to confirm suitability for a particular sealing application.

O-Ring 15x2 mm vs 15x2.2 mm

An O-ring 15x2 mm and an O-ring 15x2.2 mm are not the same size.

Both have a nominal inside diameter of 15 mm, but their cross-sections differ:

15x2 mm - 2 mm cross-section

15x2.2 mm - 2.2 mm cross-section

The 0.2 mm difference can affect O-ring compression, groove filling and sealing geometry.

These sizes should therefore not automatically be treated as interchangeable.

NBR vs FKM, EPDM and VMQ O-Rings

O-rings with the same 15x2 mm dimensions may be manufactured from different elastomers.

NBR is widely used in sealing applications involving many mineral oils, greases and compatible technical fluids.

FKM has different chemical and temperature resistance characteristics.

EPDM has a different chemical resistance profile from NBR.

VMQ, or silicone rubber, also differs from NBR in its temperature, mechanical and chemical properties.

Therefore:

NBR 15x2 mm

FKM 15x2 mm

EPDM 15x2 mm

VMQ 15x2 mm

may have identical nominal dimensions but are not automatically interchangeable from a material standpoint.

How to Select an O-Ring NBR 15x2 mm

Before purchasing or installing the O-ring, check:

• 15 mm inside diameter,
• 2 mm cross-section,
• NBR material,
• required 70 ShA hardness,
• groove geometry,
• required O-ring compression,
• O-ring stretch after installation,
• extrusion gap,
• operating pressure,
• operating temperature,
• operating medium,
• chemical compatibility,
• static or dynamic operation,
• condition of the mating surfaces.

The basic technical identification of this product is:

15x2 mm / NBR / 70 ShA

Typical Applications of NBR O-Rings

NBR O-rings are widely used as sealing components in technical systems where nitrile rubber is compatible with the operating medium and temperature.

Typical areas of use for NBR O-rings include appropriately designed hydraulic, pneumatic, machinery and industrial sealing systems.

O-rings may be used in static sealing arrangements and in selected dynamic applications.

This does not mean that the 15x2 mm O-ring is automatically suitable for a particular pump, valve, cylinder, gearbox, motor or other machine. Suitability for a specific application should be confirmed using the equipment documentation or the technical requirements of the sealing point.

Pack of 1000 pcs

The product is supplied as:

1000 pcs O-Rings NBR 15x2 mm 70 ShA

The 1000-piece bulk package is particularly suitable for industrial users who regularly require the same sealing size, including manufacturing plants, maintenance departments, technical service companies, workshops and industrial purchasing departments.

Before ordering a bulk quantity, verify the complete specification:

15x2 mm

NBR

70 ShA

Alternative Designations and Search References

The product may be identified or searched for using several common forms:

O-Ring NBR 15x2 mm 70 ShA

O-Ring 15x2 NBR

O Ring 15x2 NBR

NBR O-Ring 15x2 mm

O-Ring NBR 15x2

NBR 15x2 mm

15x2 NBR

15x2 NBR 70 ShA

15x2 NBR 70 Shore A

O-Ring NBR 70 15x2

O-Ring 15x2 70 Shore

O-Ring 15x2 mm 70 Shore A

O-Ring 15 mm x 2 mm

15 mm ID x 2 mm CS O-Ring

15 mm ID O-Ring 2 mm cross-section

NBR sealing ring 15x2 mm

Nitrile O-Ring 15x2 mm

O-Ring 15x2 1000 pcs

NBR O-Ring 15x2 1000 pcs

O-Ring NBR 15x2 mm 70 ShA 1000 pcs

For technical identification, the essential information remains 15x2 mm, NBR and 70 ShA.

O-Ring Installation

Before installation, clean the groove and mating surfaces carefully.

Protect the O-ring from sharp edges, threads and burrs that could cut, scratch or otherwise damage the elastomer.

During installation, avoid excessive stretching and twisting of the ring.

If an installation lubricant is used, it should be chemically compatible with both NBR and the operating medium.

Storage of NBR O-Rings

NBR O-rings should be stored in clean, dry conditions and protected from factors that can accelerate elastomer ageing.

Avoid direct sunlight, excessive heat, ozone and contact with substances that could adversely affect the rubber.

Where practical, keep the O-rings in their closed packaging until required.

FAQ - O-Ring NBR 15x2 mm 70 ShA

What are the dimensions of the 15x2 mm O-Ring?

The O-ring has a nominal 15 mm inside diameter and 2 mm cross-section.

What is the outside diameter of a 15x2 mm O-Ring?

Based on nominal geometry, the outside diameter is approximately 19 mm, calculated as 15 mm + 2 x 2 mm. The primary O-ring designation remains 15x2 mm.

What does NBR mean?

NBR stands for Nitrile Butadiene Rubber, an elastomer widely used for technical O-rings and other sealing components.

What does 70 ShA mean?

70 ShA indicates a nominal elastomer hardness of approximately 70 on the Shore A scale.

What is the operating temperature of an NBR 70 ShA O-Ring?

For standard NBR compounds, a typical operating range is approximately -30 C to +100 C. Depending on the specific compound, short-term exposure to around +120 C may be possible. Exact limits depend on the NBR formulation, medium and operating conditions.

Is an NBR O-Ring resistant to oil?

NBR generally provides good resistance to many mineral oils and mineral oil-based lubricants. Compatibility should still be verified for the specific oil, additives, temperature and operating conditions.

Can a 15x2.2 mm O-Ring replace a 15x2 mm O-Ring?

Not automatically. Both have a 15 mm inside diameter, but the cross-section differs by 0.2 mm. This affects groove filling, compression and sealing geometry.

How many O-Rings are included in the package?

The package contains 1000 pcs of NBR 15x2 mm 70 ShA O-Rings.

O-Ring NBR 15x2 mm 70 ShA - Key Information

O-Ring NBR 15x2 mm 70 ShA is a technical sealing ring with a 15 mm inside diameter and 2 mm cross-section, manufactured from Nitrile Butadiene Rubber with a nominal hardness of 70 Shore A. Standard NBR typically operates at approximately -30 C to +100 C. This product is supplied in a bulk pack of 1000 pcs.