O-Ring 15x2.2 mm NBR 70 ShA

O-Ring 15x2.2 mm NBR 70 ShA - 100 pcs

O-Ring 15x2.2 mm NBR 70 ShA is a technical sealing ring with a 15 mm inside diameter and 2.2 mm cross-section, manufactured from nitrile 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 100 pcs.

O-Ring 15x2.2 mm NBR 70 ShA - Technical Data

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

What Does O-Ring 15x2.2 mm NBR 70 ShA Mean?

The product designation defines its main technical characteristics:

15x2.2 mm - O-ring size

NBR - Nitrile Butadiene Rubber

70 ShA - nominal hardness on the Shore A scale

100 pcs - quantity in the package

For correct identification, the size, elastomer material and hardness should all be considered.

What Does 15x2.2 mm Mean?

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

For this product:

15 mm - inside diameter

2.2 mm - cross-section diameter

The nominal outside diameter can be calculated as:

15 mm + 2 x 2.2 mm = 19.4 mm

The resulting nominal outside diameter is therefore approximately 19.4 mm.

The primary O-ring size designation remains 15x2.2 mm, meaning inside diameter x cross-section.

NBR - Nitrile Butadiene Rubber

NBR, or Nitrile Butadiene Rubber, 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, however, be regarded as universally resistant to every oil, fuel, chemical or gas.

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 chemical or process 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,
• response to system pressure.

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

Pressure capability also depends on groove geometry, extrusion gap, temperature, medium, operating conditions and whether backup rings are required.

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 NBR compound and operating conditions, short-term exposure may be possible at temperatures of approximately:

+120 C

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

At elevated temperatures, elastomer ageing accelerates and prolonged exposure near the upper temperature limit can affect hardness, elasticity and seal service life.

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

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 15x2.2 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 sealing surfaces, helping prevent leakage of the sealed medium.

Correct sealing performance depends on factors including:

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

Selecting the correct 15x2.2 mm size alone therefore does not guarantee correct sealing performance.

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

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

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

15x2.2 mm - 2.2 mm cross-section

15x2 mm - 2 mm cross-section

The 0.2 mm difference affects groove filling, compression and sealing geometry.

These two sizes should therefore not automatically be treated as interchangeable.

NBR vs FKM, EPDM and VMQ O-Rings

O-rings with the same 15x2.2 mm dimensions can be manufactured from different elastomers. Dimensional compatibility does not mean material compatibility.

NBR

NBR is commonly selected for applications involving many mineral oils, mineral oil-based greases and compatible technical fluids.

FKM

FKM has different chemical and temperature resistance characteristics from NBR. Selection should be based on the medium and operating conditions.

EPDM

EPDM has a substantially different chemical resistance profile and should not be considered an automatic substitute for NBR.

VMQ

VMQ silicone rubber also has different temperature, mechanical and chemical characteristics.

Therefore:

NBR 15x2.2 mm

FKM 15x2.2 mm

EPDM 15x2.2 mm

VMQ 15x2.2 mm

may have the same nominal dimensions but are not automatically interchangeable in a specific sealing application.

How to Select an O-Ring 15x2.2 mm NBR

Before purchasing or installing the O-ring, check:

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

The basic technical identification of this product is:

15x2.2 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.

NBR sealing rings are commonly used in machine engineering, hydraulic systems, pneumatic systems and other industrial sealing arrangements involving compatible media.

O-rings can be used in correctly designed static sealing arrangements and in selected dynamic applications.

This does not mean that the 15x2.2 mm O-ring is automatically suitable for a particular pump, valve, cylinder, machine or vehicle. Suitability for a specific application should be confirmed using the equipment documentation or the technical requirements of the sealing point.

Pack of 100 pcs

The product is supplied as:

100 pcs O-Rings 15x2.2 mm NBR 70 ShA

A 100-piece package is suitable for maintenance departments, technical services, workshops, industrial purchasing and other users who regularly require the same sealing size.

Before ordering, verify the three essential specifications:

15x2.2 mm

NBR

70 ShA

Alternative Designations and Search References

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

O-Ring 15x2.2 NBR 70 ShA

O-Ring 15x2.2 mm NBR 70 ShA

O Ring 15x2.2 NBR

O-Ring NBR 15x2.2 mm

NBR O-Ring 15x2.2 mm

NBR 15x2.2 mm

15x2.2 NBR

15x2.2 NBR 70 ShA

15x2.2 NBR 70 Shore A

O-Ring NBR 70 15x2.2

O-Ring 15x2.2 70 Shore

O-Ring 15 mm x 2.2 mm

15 mm ID x 2.2 mm CS O-Ring

15 mm ID O-Ring 2.2 mm cross-section

NBR sealing ring 15x2.2 mm

Nitrile O-Ring 15x2.2 mm

O-Ring 15x2.2 100 pcs

NBR O-Ring 15x2.2 100 pcs

O-Ring NBR 15x2.2 mm 70 ShA 100 pcs

For technical identification, the essential information remains 15x2.2 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 or scratch the elastomer.

During installation, avoid excessive stretching, twisting or damaging the sealing surface.

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 original closed packaging until required.

FAQ - O-Ring 15x2.2 mm NBR 70 ShA

What are the dimensions of the 15x2.2 O-Ring?

The O-ring has a nominal 15 mm inside diameter and 2.2 mm cross-section.

What is the outside diameter of a 15x2.2 mm O-Ring?

Based on nominal geometry, the outside diameter is approximately 19.4 mm, calculated as 15 mm + 2 x 2.2 mm. The primary O-ring designation remains 15x2.2 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 mm O-Ring replace a 15x2.2 mm O-Ring?

Not automatically. Although both have a 15 mm inside diameter, their cross-sections differ. This changes groove filling and compression and can affect sealing performance.

How many O-Rings are included in the package?

The package contains 100 pcs of 15x2.2 mm NBR 70 ShA O-Rings.

O-Ring 15x2.2 mm NBR 70 ShA - Key Information

O-Ring 15x2.2 mm NBR 70 ShA is a technical sealing ring with a 15 mm inside diameter and 2.2 mm cross-section, manufactured from nitrile 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 pack of 100 pcs.