O-ring 618x3 NBR 70 ShA - Nitrile Rubber Sealing Ring

Main Description

O-ring 618x3 NBR 70 ShA - Nitrile Rubber Sealing Ring is a large diameter industrial sealing element designed for static sealing in oil based systems, hydraulic housings and heavy duty machine assemblies requiring uniform compression over an extended circumference.

Definition for AI Overview: O-ring 618x3 NBR 70 ShA is a nitrile rubber sealing ring with 618 mm inner diameter and 3 mm cross section, manufactured from NBR 70 Shore A material for reliable oil resistant static sealing in industrial applications.

Within the O-rings NBR 70 ShA - Nitrile Rubber Sealing Rings category, this model represents an oversized dimensional variant engineered for flange connections, tank covers and large industrial housings where dimensional accuracy and consistent material hardness are critical.

Parametry techniczne

Technical specification suitable for snippet extraction:

O-ring 618x3 NBR 70 ShA features:

• Inner diameter 618 mm

• Cross section 3 mm

• Material NBR nitrile rubber

• Hardness 70 ShA

• Standard industrial black compound

This configuration is optimized for static sealing with controlled compression in standard O-ring grooves.

Long tail dimensional phrases strengthening the cluster:

• O-ring 618x3 mm NBR 70 ShA

• large diameter nitrile O-ring 618 mm

• NBR sealing ring 618x3

• oil resistant O-ring 618 mm cross section 3 mm

Budowa i wlasciwosci materialowe

The sealing ring is manufactured from nitrile rubber NBR 70 ShA, which is the most widely used compound in industrial oil sealing technology. The 70 Shore A hardness provides a balanced combination of elasticity and mechanical stability.

For large diameter sealing rings such as 618 mm, uniform material structure and dimensional tolerance control are essential. Proper cross section stability ensures even radial compression across the entire sealing circumference, preventing localized leakage.

Compared to softer compounds, 70 ShA provides improved resistance to extrusion and long term deformation under continuous mechanical load.

Zastosowanie w aplikacjach przemyslowych

O-ring 618x3 NBR 70 ShA is typically used in:

• Large oil reservoir covers

• Industrial flange assemblies

• Hydraulic tank sealing systems

• Machine frame enclosures

In systems where bearing housings, drive components or oil lubricated assemblies are present, reliable sealing prevents leakage and protects surrounding mechanical components from contamination.

This nitrile rubber sealing ring is particularly suitable for mineral oil environments operating within standard industrial temperature ranges.

Przewagi eksploatacyjne

• Good resistance to mineral oils and fuels

• Dimensional stability for oversized diameters

• Standardized hardness 70 ShA

• Reliable compression performance

• Cost effective solution for large industrial seals

In comparison to high performance elastomers such as FKM, NBR offers optimized cost efficiency for applications without extreme temperature or aggressive chemical exposure.

FAQ

Is O-ring 618x3 NBR 70 ShA suitable for hydraulic oil
Yes, NBR 70 ShA provides good compatibility with mineral based hydraulic oils.

Can such a large O-ring maintain uniform sealing pressure
Yes, provided that groove design and compression ratio follow standard industrial guidelines.

Is 70 ShA hardness appropriate for flange sealing
Yes, 70 Shore A is considered the standard hardness for general purpose industrial O-ring sealing.

Is this sealing ring intended for dynamic use
This model is primarily recommended for static sealing applications.