O-Ring NBR 8x1.8 70 ShA

O-Ring NBR 8x1.8 70 ShA 1000 pcs - Bulk Industrial Supply

NBR O-Ring 8x1.8 mm 70 ShA 1000 pcs is a bulk package of technical sealing rings intended for B2B customers, OEM manufacturing, series production and industrial maintenance. Each O-ring has an 8 mm inside diameter and 1.8 mm cross-section. NBR 70 ShA is widely used in industrial sealing due to its resistance to mineral oils, greases and many compatible operating fluids. The 1000-piece bulk pack supports warehouse stock and production continuity.

Technical Data - NBR O-Ring 8x1.8 70 ShA

Product type: O-ring / technical sealing ring
Nominal size: 8x1.8 mm
Inside diameter: 8 mm
Cross-section: 1.8 mm
Nominal outside diameter: 11.6 mm
Material: NBR / Buna-N
Hardness: 70 ShA
Colour: Black
Profile: Round
Typical temperature range: -30°C to +100°C
Chemical resistance: Mineral oils, greases and many mineral oil-based hydraulic fluids
Packaging: 1000 pcs

The nominal outside diameter of 11.6 mm is calculated from 8 mm + 2 x 1.8 mm.

Why NBR 70 ShA for Series Production?

NBR, also known as Buna-N, is one of the standard elastomers used for technical sealing. A hardness of 70 Shore A is widely used for O-rings installed in industrial systems where a practical balance between elasticity and mechanical stability is required.

NBR provides good resistance to mineral oils, lubricating greases and many mineral oil-based hydraulic fluids. It is therefore commonly used in hydraulic equipment, pneumatic systems, valves, pumps and mechanical assemblies.

Compatibility should always be verified for the specific operating medium, temperature, pressure and application conditions.

Series Applications for 8x1.8 mm O-Rings

The 1000 pcs bulk pack of NBR 8x1.8 mm O-rings is designed for repeated use in manufacturing, assembly and maintenance operations. The 1.8 mm cross-section makes this size suitable for appropriately dimensioned compact sealing grooves.

Typical industrial applications include:

• OEM component assembly
• industrial hydraulics
• pneumatic equipment
• pumps and valves
• technical fittings
• mechanical assemblies
• production lines
• MRO operations
• repetitive equipment assembly

Benefits of Bulk Purchasing 1000 pcs

The 1000-piece package is intended for companies where the 8x1.8 mm O-ring is a regularly consumed production or maintenance component.

Bulk packaging helps establish an appropriate warehouse stock for OEM production and MRO operations. Maintaining a larger quantity of one standardized sealing size reduces the frequency of replenishment orders and lowers the risk of production or scheduled maintenance being interrupted by a shortage of a basic sealing component.

This variant is particularly suitable for machine manufacturers, industrial plants, maintenance departments, resellers, technical service companies and B2B procurement.

NBR 8x1.8 O-Rings for Hydraulic Systems

NBR 70 ShA is commonly used in hydraulic systems operating with compatible mineral oils and mineral oil-based hydraulic fluids.

The O-ring may be used for static sealing and in appropriately engineered dynamic applications. Correct selection requires consideration of pressure, fluid compatibility, temperature, groove geometry and operating movement.

NBR 8x1.8 O-Rings for Pneumatic Systems

In pneumatic equipment, this O-ring size can be used in appropriately designed valves, fittings, actuators and other sealing points.

The suitability of the 8x1.8 mm cross-section depends on the dimensions of the sealing groove, required compression, operating pressure and movement conditions.

Warehouse Stock for OEM and MRO

For industrial users consuming the 8x1.8 mm size regularly, a 1000-piece package can form part of the standard warehouse inventory for manufacturing and MRO.

Maintaining stock of the correct sealing size supports production continuity, scheduled maintenance and faster service operations without waiting for frequent small replenishment deliveries.

Elastomer components should be stored away from excessive heat, direct light, ozone sources and other conditions that can accelerate material ageing.

Key Identification Data for Industrial Procurement

Size: 8x1.8 mm
Inside diameter: 8 mm
Cross-section: 1.8 mm
Outside diameter: 11.6 mm nominal
Material: NBR / Buna-N
Hardness: 70 Shore A
Industrial quantity: 1000 pcs
Procurement type: Bulk packaging
Target use: OEM, MRO, series production, warehouse stock

The 8x1.8 mm O-ring must not automatically be replaced by an 8x2 mm O-ring. A different cross-section changes groove filling and sealing compression.

Frequently Asked Questions by Engineers

Does 8x1.8 mm specify the inside or outside diameter?
The first value is the 8 mm inside diameter. The second value is the 1.8 mm cross-section. The nominal outside diameter is 11.6 mm.

Can an 8x1.8 mm O-ring be replaced with an 8x2 mm size?
Not automatically. Increasing the cross-section from 1.8 mm to 2 mm changes groove filling and compression, which can affect sealing performance and installation.

Why is NBR 70 ShA commonly used in hydraulic equipment?
NBR provides good resistance to mineral oils and many mineral oil-based hydraulic fluids, making it a widely used elastomer for industrial hydraulic sealing.

Is the 1000 pcs package suitable for production-line supply?
Yes. This bulk variant is intended specifically for series production, OEM assembly, MRO and recurring industrial consumption.

Can NBR 8x1.8 mm be used with every type of oil?
No. Compatibility depends on the oil formulation, additives, operating temperature and exposure time. Material compatibility should be verified for the specific fluid.

How should a warehouse stock of NBR O-rings be stored?
O-rings should be protected from excessive heat, direct light, ozone and other environmental factors that can accelerate elastomer ageing.