O-ring 88,6x1,78 mm NBR 90 ShA

Construction and Material

O-ring 88,6x1,78 mm NBR 90 ShA is a precision elastomer sealing element manufactured from nitrile rubber, designed for applications requiring increased hardness and improved resistance to pressure extrusion. Within the nitrile NBR orings category, the 88,6x1,78 mm variant with 90 ShA hardness represents a thin cross section sealing solution with enhanced mechanical stability.

The NBR 90 ShA compound offers higher hardness compared to standard 70 ShA materials, reducing deformation under load and improving dimensional stability in high pressure environments. The 1,78 mm cross section ensures compatibility with narrow gland designs and precision machined grooves.

This NBR oring is particularly recommended for static and limited dynamic sealing applications where resistance to extrusion and compression set is critical.

Technical Parameters

Technical specification suitable for snippet extraction:

Type: Oring
Material: NBR nitrile rubber
Inside diameter: 88,6 mm
Cross section: 1,78 mm
Hardness: 90 ShA
Color: black
Resistance: mineral oils, greases, fuels

Long tail phrases: Oring 88,6x1,78 NBR 90 ShA, nitrile oring 88,6 mm, 1,78 mm cross section NBR seal, oil resistant oring 90 ShA.

Industrial Applications

Nitrile NBR orings 88,6x1,78 mm 90 ShA are commonly used in:

• High pressure hydraulic systems

• Pneumatic installations

• Industrial machinery operating with mineral oils

• Pumps and valve assemblies

• Drive units requiring reliable static sealing

The 88,6 mm inside diameter combined with a thin 1,78 mm cross section makes this oring suitable for precision sealing grooves where space is limited and pressure resistance is required.

Operational Advantages

• Increased hardness 90 ShA for improved extrusion resistance

• Good chemical resistance to oils and fuels

• Stable performance under higher pressure conditions

• Accurate 1,78 mm cross section for precision glands

• Suitable for a wide range of industrial sealing applications

Within the nitrile NBR orings cluster, the 88,6x1,78 mm 90 ShA model provides a reinforced sealing option for applications where standard hardness may be insufficient.

Main Description

Oring 88,6x1,78 mm NBR 90 ShA is a high hardness elastomer sealing solution engineered for industrial systems operating under elevated pressure and limited installation space.

As part of the nitrile NBR orings range, the 88,6x1,78 mm 90 ShA configuration delivers enhanced resistance to extrusion and deformation compared to conventional 70 ShA seals. The thin 1,78 mm cross section allows installation in narrow grooves while maintaining effective compression and sealing integrity.

NBR nitrile rubber is widely used due to its excellent resistance to mineral oils, lubricants and fuels. Therefore, the 88,6x1,78 mm nitrile oring is frequently applied in hydraulic power units, pneumatic systems and industrial drive assemblies. The increased hardness 90 ShA improves dimensional stability under pressure and reduces the risk of seal failure in demanding environments.

In static sealing applications and low speed movements, this oring ensures consistent sealing performance and predictable service life when properly installed. The precise dimensional tolerance supports repeatable assembly in standardized industrial housings.

Oring 88,6x1,78 mm NBR 90 ShA is a reliable choice for B2B industrial customers seeking durable, oil resistant and pressure stable sealing elements.

FAQ

Is Oring 88,6x1,78 mm NBR 90 ShA suitable for hydraulic systems?
Yes, especially in higher pressure hydraulic applications.

What is the difference between 90 ShA and 70 ShA?
90 ShA has higher hardness and offers better resistance to deformation and extrusion.

Is NBR resistant to oils?
Yes, nitrile rubber provides good resistance to mineral oils and fuels.

Is 1,78 mm cross section used in precision grooves?
Yes, it is commonly used in narrow and precisely machined sealing glands.