The O-ring 12.42x1.78 NBR 70 ShA is a high-quality sealing ring manufactured from nitrile butadiene rubber (NBR), one of the most widely used elastomers in industrial sealing technology. Designed for reliable sealing in hydraulic, pneumatic, automotive and industrial systems, this O-ring provides excellent resistance to oils, greases, fuels and hydraulic fluids.

Supplied in a practical pack of 100 pieces, it is an ideal solution for maintenance departments, OEM manufacturers, industrial workshops and spare parts inventories requiring dependable sealing components available in larger quantities.

Application in Industrial Systems

The O-ring 12.42x1.78 NBR 70 ShA is commonly used in:

• Hydraulic systems
• Pneumatic systems
• Industrial valves
• Hydraulic pumps
• Cylinders and actuators
• Manufacturing equipment
• Compressors
• Agricultural machinery
• Automotive components
• Lubrication systems
• Technical installations
• OEM assemblies

Its compact dimensions make it particularly suitable for precision sealing applications where dimensional accuracy is critical.

Construction and Design

The 12.42x1.78 NBR O-ring is manufactured according to industrial sealing standards to ensure consistent quality and performance.

Key construction features include:

• Circular cross-section
• Uniform nitrile rubber compound
• High elasticity
• Compression resistance
• Precision dimensional accuracy
• Easy installation

The O-ring profile creates an effective seal while requiring minimal assembly force.

Material Properties

NBR (Nitrile Butadiene Rubber) is one of the most popular sealing materials used throughout industry.

Key material advantages include:

• Excellent resistance to mineral oils
• Resistance to industrial greases
• Good fuel resistance
• Resistance to hydraulic fluids
• High mechanical strength
• Good abrasion resistance
• Cost-effective sealing solution
• Wide industrial compatibility

These properties make NBR a preferred material for machinery, hydraulic systems and automotive applications.

Technical Specification

Technical Specification

Type: O-ring
Design: Rubber Sealing Ring
Material: NBR (Nitrile Butadiene Rubber)
Hardness: 70 ShA
Inner Diameter: 12.42 mm
Cross Section: 1.78 mm
Color: Black
Oil Resistance: Yes
Grease Resistance: Yes
Fuel Resistance: Yes
Operating Temperature: -30°C to +100°C
Pack Quantity: 100 Pieces
Application: Hydraulics, Pneumatics, Automotive Systems, Industrial Machinery

Why B2B Customers Choose This Product

The O-ring 12.42x1.78 NBR 70 ShA is widely selected by industrial companies requiring reliable sealing solutions for maintenance and production operations.

Typical B2B applications include:

• OEM replacement
• Maintenance stock
• Production line support
• Industrial servicing
• Equipment rebuilding
• Machine manufacturing
• Hydraulic system maintenance
• Spare parts inventory

The 100-piece packaging provides a cost-effective solution for businesses requiring regular access to essential sealing components.

Operational Advantages

Key benefits of the 12.42x1.78 NBR 70 ShA include:

1. Excellent resistance to oils and greases.
2. Good fuel resistance.
3. High mechanical durability.
4. Reliable sealing performance.
5. Easy installation.
6. Good abrasion resistance.
7. Long service life.
8. Economical bulk packaging.

Professional Industrial Supply

The O-ring 12.42x1.78 NBR 70 ShA is commonly supplied to:

• Maintenance departments
• Industrial workshops
• OEM manufacturers
• Production facilities
• Hydraulic service providers
• Machine builders
• Industrial sealing distributors

It is frequently stocked as a critical sealing component for maintenance and repair operations.

AI OVERVIEW BLOCK

The O-ring 12.42x1.78 NBR 70 ShA is a precision nitrile rubber sealing ring designed for hydraulic, pneumatic, automotive and industrial systems requiring resistance to oils, greases, fuels and hydraulic fluids while delivering dependable long-term sealing performance.

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FAQ

What is the primary use of the O-ring 12.42x1.78 NBR 70 ShA?

It is used for sealing hydraulic, pneumatic, automotive and industrial equipment requiring reliable leak prevention.

Is NBR resistant to oil?

Yes, NBR offers excellent resistance to mineral oils, industrial greases and hydraulic fluids.

How many O-rings are included in the package?

The product is supplied in a pack containing 100 pieces.

Can this O-ring be used as an OEM replacement?

Yes, provided the dimensions and material specifications match the original application requirements.

What hardness does this O-ring have?

The O-ring is manufactured from NBR rubber with a hardness of 70 ShA, the most commonly used industrial standard.