O-ring 340x3 NBR 70 ShA

O-ring 340x3 NBR 70 ShA Nitrile Rubber Seal

O-ring 340x3 NBR 70 ShA is an industrial sealing ring manufactured from nitrile butadiene rubber designed primarily for static sealing applications in technical installations and industrial equipment. The dimension 340x3 mm allows the seal to be used in large diameter sealing grooves commonly found in pumps, tanks, flange connections and industrial machinery. This technical sealing component is widely used in industrial environments due to the strong resistance of NBR material to oils, greases and many working fluids used in hydraulic and mechanical systems.

NBR nitrile O-rings belong to the most commonly used sealing components in industrial engineering. The hardness of 70 ShA provides a balanced combination of elasticity and durability, allowing the sealing ring to maintain reliable performance in installations exposed to pressure changes and mechanical loads.

Industrial applications

The O-ring size 340x3 mm is typically used in large scale mechanical systems and industrial installations requiring reliable static sealing.

Typical applications include:

static sealing in industrial installations
flange connections in process systems
industrial pumps
technical tanks and reservoirs
hydraulic installations
fluid transport systems in industry

NBR technical O-rings provide effective sealing while maintaining a simple and reliable installation design.

Construction and design

The O-ring 340x3 NBR 70 ShA features a circular cross section that allows uniform compression between sealing surfaces. This geometry creates a consistent sealing pressure which prevents leakage of liquids and gases.

NBR nitrile rubber combines elasticity with resistance to mechanical wear. The material maintains stable performance in oil lubricated environments and under demanding industrial conditions.

A hardness level of 70 Shore A is widely used in sealing technology because it provides an optimal balance between flexibility and mechanical strength.

Technical specifications

Type: sealing O-ring
Material: NBR nitrile rubber
Hardness: 70 ShA
Inner diameter: 340 mm
Cross section: 3 mm
Outer diameter: approximately 346 mm
Color: black

NBR material offers strong resistance to mineral oils, lubricants and many industrial fluids used in mechanical systems.

Operational advantages

The O-ring 340x3 NBR 70 ShA provides several advantages for industrial sealing applications.

Key benefits include:

reliable sealing performance
excellent resistance to oils and lubricants
good elasticity and compression properties
mechanical durability in industrial environments
long service life in technical installations

Because of these properties, nitrile O-rings are widely used in industrial maintenance, machine manufacturing and equipment servicing.

Dimensional compatibility

The O-ring dimension 340x3 mm is designed for large sealing grooves used in industrial equipment. The cross section provides stable sealing performance even in systems exposed to vibration and variable pressure.

FAQ

What is the O-ring 340x3 NBR 70 ShA used for
It is used for static sealing in industrial installations, pumps, tanks and flange connections.

Is nitrile rubber resistant to oil
Yes, NBR nitrile rubber offers excellent resistance to mineral oils, fuels and lubricants.

Can the 340x3 O-ring be used in hydraulic systems
Yes, NBR O-rings with hardness 70 ShA are widely used in hydraulic and industrial sealing applications.

Why are NBR O-rings widely used in industry
Because they provide good chemical resistance, durability and reliable sealing performance in many technical applications.