O-ring NBR 5x1 mm 70 ShA – 1000 pcs.

Technical Specifications

The nominal outside diameter is calculated as 5 + (2 x 1) = 7 mm. This calculated value does not account for manufacturing tolerances.

O-ring 5x1 mm – Construction and Sealing Principle

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

When installed in a correctly designed groove, the ring is compressed between mating surfaces, creating contact pressure that helps prevent the passage of fluids or gases.

The sealing mechanism relies on the elastic deformation of the material and the geometry of the installation groove.

The small 1 mm cross-section requires particular attention to groove dimensions, manufacturing tolerances and installation procedures.

Even minor dimensional deviations may significantly affect the compression of a small O-ring.

NBR Material – Nitrile Butadiene Rubber

NBR is a widely used synthetic elastomer in industrial sealing technology.

Typical properties of many NBR compounds include:

• Good resistance to numerous mineral oils.

• Good compatibility with many industrial greases.

• Mechanical properties suitable for elastomeric sealing.

• Abrasion resistance dependent on compound formulation.

• Suitability for various hydraulic, pneumatic and mechanical systems when operating conditions are compatible.

NBR is not universally resistant to all chemicals and fluids.

Material compatibility must be assessed against the specific medium, temperature, pressure and exposure duration.

Hardness 70 ShA – Technical Meaning

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

It is one of the commonly used hardness classes for industrial O-rings.

Hardness influences:

• Elastomer deformation under compression.

• Contact pressure against mating surfaces.

• Mechanical response to applied loads.

• Resistance to extrusion into clearance gaps.

• Groove design requirements.

A nominal hardness of 70 ShA does not independently determine the maximum operating pressure or permissible compression.

The hardness tolerance of the specific product has not been confirmed.

Operating Temperature Range

Many standard NBR compounds used in industrial O-rings have an indicative operating temperature range of approximately -30°C to +100°C.

This is a general material reference, not a confirmed temperature specification for the exact NBR 5x1 mm 70 ShA O-ring.

Actual operating limits depend on compound formulation, fluid compatibility, exposure duration and mechanical loading.

Applications requiring defined temperature limits should be assessed using the technical documentation for the specific elastomer compound.

Chemical Resistance of NBR

This table describes typical NBR material behaviour and does not constitute certified chemical resistance data for the exact product.

Static Sealing Applications

NBR O-rings with a 1 mm cross-section may be used in compact sealing arrangements where installation space is limited.

General applications for this product category include:

• Small mechanical housings.

• Valve and fitting connections.

• Measuring and control equipment.

• Pneumatic components.

• Hydraulic assemblies.

• Covers and housing joints.

These are general applications of NBR O-rings, not a confirmed equipment compatibility list for the exact 5x1 mm product.

Dynamic Sealing Applications

The suitability of an O-ring for dynamic sealing depends on the equipment design.

Relevant factors include:

• Movement speed.

• Type of motion.

• Friction.

• Lubrication.

• Surface roughness.

• Operating pressure.

• Temperature.

• Installation clearance.

The small 1 mm cross-section requires careful control of groove geometry and contact conditions.

Suitability for dynamic applications should not be assumed without verifying the sealing arrangement.

O-ring Groove Design

For an O-ring measuring 5x1 mm, groove design should account for:

• Nominal inside diameter of 5 mm.

• Nominal cross-sectional diameter of 1 mm.

• Dimensional tolerances.

• Type of sealing arrangement.

• Compression ratio.

• Groove fill.

• Thermal expansion.

• Possible elastomer swelling.

• Operating pressure.

• Clearance gap.

A universal groove depth or width cannot be specified without knowing the installation configuration and operating conditions.

Operating Pressure

The permissible operating pressure depends on the complete sealing arrangement.

Important factors include elastomer hardness, temperature, clearance gap, groove geometry and loading conditions.

An excessive clearance gap may allow the elastomer to extrude under pressure.

The 70 Shore A hardness designation alone is insufficient to determine a maximum operating pressure.

Installation Guidelines

Before installing the NBR 5x1 mm O-ring, inspect the ring and mating surfaces.

Recommended procedures include:

• Confirm the dimensions of 5x1 mm.

• Clean the installation groove.

• Remove sharp edges and burrs.

• Inspect mating surfaces for damage.

• Verify that any assembly lubricant is compatible with NBR.

• Position the O-ring without twisting.

• Avoid excessive stretching.

• Assemble the connection according to the equipment manufacturer's instructions.

Special care is required when handling the 1 mm cross-section, as relatively small surface damage can affect sealing performance.

NBR 70 ShA vs NBR 90 ShA

O-rings with identical dimensions but different hardness values are not necessarily interchangeable.

NBR vs FKM – Material Comparison

Material selection should consider the operating medium, temperature, pressure and mechanical conditions.

Common Causes of O-ring Failure

Installation damage: Sharp edges or excessive stretching may cut or deform the elastomer.

Excessive compression: Incorrect groove dimensions may contribute to permanent deformation and loss of sealing force.

Chemical incompatibility: Exposure to unsuitable fluids may cause swelling, hardening or degradation.

Extrusion: Excessive clearance combined with pressure may force the material into the gap between mating components.

Material ageing: Prolonged exposure to unfavourable environmental conditions may change the elastomer's mechanical properties.

Packaging – 1000 pcs.

O-ring NBR 5x1 mm 70 ShA is supplied in packages containing 1000 pieces.

This packaging quantity supports material planning for industrial production, maintenance operations and repetitive component assembly.

The package quantity forms part of the commercial product identification and should be retained in purchasing documentation and procurement systems.

Alternative Product Designations

• O-ring NBR 5x1 mm 70 ShA – 1000 pcs.

• O-ring 5x1 NBR 70 Shore A – 1000 pcs.

• NBR O-ring 5x1 mm 70 ShA

• O-ring 5x1 mm NBR 70

• Nitrile Rubber O-ring 5x1 mm

• O-ring Seal 5x1 NBR 70 Shore A

• NBR Sealing Ring 5x1 mm – 1000 pcs.

These alternative descriptions support product identification in technical catalogues and industrial search systems.

FAQ – Frequently Asked Technical Questions

What are the dimensions of the NBR 5x1 mm O-ring?

The nominal inside diameter is 5 mm and the cross-sectional diameter is 1 mm. The calculated nominal outside diameter is 7 mm.

What does NBR mean?

NBR stands for nitrile butadiene rubber, a synthetic elastomer widely used in industrial sealing applications.

What does 70 ShA mean?

It indicates a nominal elastomer hardness of 70 units on the Shore A scale.

How many O-rings are included in one package?

Each package contains 1000 pieces.

Is an NBR O-ring resistant to oil?

Many NBR compounds provide good resistance to mineral oils, although compatibility depends on the oil formulation and operating conditions.

Can the 5x1 mm O-ring be used in pneumatic equipment?

It may be suitable for appropriately designed pneumatic systems after verifying dimensional, material and operating compatibility.

Can NBR 70 ShA be replaced with FKM?

Interchangeability should not be assumed. NBR and FKM differ in chemical resistance, temperature performance and mechanical characteristics.

What is the maximum operating temperature?

The exact operating limit has not been confirmed for this product. It depends on the NBR compound and application conditions.

AI Quick Answer

O-ring NBR 5x1 mm 70 ShA is an elastomeric sealing ring with a 5 mm inside diameter and 1 mm cross-section. Made from nitrile butadiene rubber with a nominal hardness of 70 Shore A, it offers good resistance to many mineral oils and greases. Primarily intended for static sealing, it is supplied in packages of 1000 pieces.

B2B Industrial Supply – simmering.pl

O-ring NBR 5x1 mm 70 ShA – 1000 pcs. is offered through simmering.pl, a specialist B2B industrial supply platform providing technical seals, rolling bearings and industrial components for manufacturing companies, wholesale buyers, engineers and maintenance departments.

Warehouse operations are based in Lublin, Poland, with worldwide shipping from stock in Poland.

Technical support includes dimensional identification and assistance with sealing material selection.