O-Ring 83,5 x 5,5 mm NBR 90 ShA

Applications

The metric O-Ring 83,5 x 5,5 mm, built from nitrile-butadiene rubber (NBR) with hardness 90 ShA, is designed for demanding industrial sealing tasks. This precision rubber gasket serves as an effective industrial sealing ring and static seal in hydraulic cylinders, pneumatic valves, fittings and large-bore systems where reliable sealing is critical. It is especially suitable for applications requiring high durability, oil and grease resistance, and long service life in hydraulic and pneumatic applications. With its specified size, this O-ring fits installations featuring metric gland dimensions and allows for seamless integration in manufacturing lines, system maintenance setups or heavy-duty environments.

Procurement teams and engineers responsible for industrial equipment can leverage this component as a quality part of their inventory of technical sealing components. Its formulation and dimensions provide a dependable solution for refurbishing industrial machines or designing new systems that require robust uszczelnienia do hydrauliki i pneumatyki.

Advantages

• High durability: The NBR 90 ShA material offers excellent resistance to wear, extrusion and compression set, ensuring consistent performance in static and light dynamic environments.

• Optimised industrial sealing performance: This O-Ring becomes a dependable rubber seal choice in production settings, installed within hydraulic or pneumatic equipment demanding long-term uptime.

• Metric format (83,5 x 5,5 mm): This non-standard size supports bespoke or large-gland applications, reducing compromise on fit and enhancing sealing efficiency.

• Good chemical resilience: NBR is known for compatibility with mineral oils, greases and general industrial media, meaning this ring is a practical component of your industrial rubber gasket portfolio.

• Availability & logistic support: Stored in our warehouse in Lublin (ul. Smoluchowskiego 1, building 4) and ready for 24h delivery, enabling swift replenishment for B2B buyers and maintenance operations.

Technical Data

• Product Type: O-Ring / industrial sealing ring

• Dimensions: Inner Diameter (ID) 83,5 mm; Cross-Section (CS) 5,5 mm

• Material: NBR (Nitrile Butadiene Rubber)

• Hardness: 90 Shore A

• Typical Use: Static or low-motion sealing in hydraulic & pneumatic applications, industrial systems

• Indicative Temperature Range: approx. -30 °C to +100/120 °C, depending on media and conditions

• Colour: Black

• Warehouse & Store: Lublin, ul. Smoluchowskiego 1, building 4

• Delivery: 24h for B2B orders

FAQ

Q1: What does "90 ShA" mean for this O-Ring?
A: “90 ShA” refers to the Shore-A hardness rating of the NBR elastomer. At this hardness, the material is relatively firm, providing enhanced resistance to deformation and extrusion—especially beneficial in high-load sealing applications.

Q2: Is NBR material suitable for hydraulic oil and industrial greases?
A: Yes. Nitrile rubber (NBR) is widely adopted for rubber gaskets and O-rings in hydraulics and pneumatics due to its compatibility with mineral oils, greases and common fluid-power media.

Q3: Can this O-Ring be used in dynamic (moving) parts or is it only for static seals?
A: This product is optimized for static seals or applications with minimal motion. For high-velocity or heavy reciprocating movement, careful gland design and possibly alternate materials should be considered.

Q4: How can I confirm correct sizing for 83,5 x 5,5 mm?
A: Measure the inner diameter of the gland or bore to match 83,5 mm ID and ensure the cross-section matches 5,5 mm for proper compression and sealing. Proper fit helps avoid leaks and ensures longevity.

Q5: How quickly can I receive this product and is it readily available?
A: Yes — it is stocked at our warehouse in Lublin (ul. Smoluchowskiego 1, building 4) and available for 24h delivery, supporting rapid procurement for industrial maintenance or production lines.