O-Ring NBR 26x2.5 mm

Main Description

The O-Ring 26x2.5 mm NBR 70 ShA is a high-quality rubber sealing ring designed for demanding industrial, hydraulic, and pneumatic applications. Made from nitrile rubber (NBR) with a hardness of 70 Shore A, this seal combines chemical and oil resistance, mechanical durability, and precise dimensions — ensuring dependable sealing performance in a wide range of operating conditions.

As a static or light-dynamic seal, this O-ring provides an effective barrier against oils, lubricants, fuels, hydraulic fluids, and many common industrial chemicals. Its 26 mm inner diameter and 2.5 mm cross-section deliver a snug, reliable fit in standard grooves, making installation quick and secure. Supplied in a pack of 100 pieces, the product is ideal for maintenance, repairs, production lines, or OEM supply, allowing efficient inventory management and reducing downtime.

Thanks to the properties of NBR, this O-ring exhibits low compression set, long-term dimensional stability, and resistance to mineral oils, greases, and fuels. Typical operating temperature range is from -30 °C to +100 °C, covering the vast majority of industrial and mechanical sealing tasks. Its flexibility and resilience make it suitable for sealing in pumps, valves, engines, hydraulic cylinders, pneumatic fittings, and general machinery.

With this O-ring you get a cost-effective, reliable sealing solution that balances elasticity, oil resistance, and mechanical strength. Whether you are equipping a production line, repairing hydraulic systems, or stocking a maintenance warehouse — this oil-resistant industrial seal delivers performance and durability where it matters.

Applications

• Hydraulic and pneumatic systems — cylinders, valves, connectors, actuators.

• Pumps, compressors, and fluid transfer units handling oils, lubricants, or fuels.

• Engines, gearboxes, and industrial machinery requiring oil-resistant sealing.

• General maintenance, OEM production, and bulk spare parts supply.

Advantages of This O-Ring

• Excellent oil and fuel resistance thanks to nitrile rubber (NBR) compound — ideal for systems with mineral oils, grease, and hydraulic fluids.

• Precise fit and sealing performance — 26x2.5 mm size ensures reliable sealing when compressed in standard grooves.

• Durability and longevity — NBR 70 ShA delivers a good balance between elasticity and mechanical robustness, resisting wear and compression set over time.

• Bulk pack 100 pcs — cost-efficient for companies, service departments, or OEMs needing regular supply of seals.

• Versatile usage — suitable for static seals but also light dynamic applications in hydraulic/pneumatic and mechanical systems.

Technical Data

FAQ

Q1: Is the O-ring 26x2.5 mm suitable for oil and fuel applications?
A1: Yes — made from NBR 70 ShA, this O-ring is specifically designed to resist mineral oils, lubricants, fuels, and hydraulic fluids, making it highly suitable for oil-resistant sealing tasks.

Q2: Can it be used in hydraulic or pneumatic cylinders and valves?
A2: Absolutely. The O-ring is well-suited for hydraulic and pneumatic applications, providing reliable sealing in static or moderately dynamic conditions such as pistons, valves, and connectors.

Q3: What temperature range does the O-ring support?
A3: It operates reliably in a typical industrial temperature range from about -30 °C up to +100 °C, covering most standard hydraulic, pneumatic, and mechanical systems.

Q4: Is a pack of 100 pieces appropriate for industrial use?
A4: Yes — the 100 pcs bulk pack is ideal for maintenance shops, production plants, and OEMs. It helps maintain spare parts inventory, simplifies procurement, and reduces downtime.

Q5: What types of systems benefit most from this O-ring?
A5: Systems that require reliable oil-resistant sealing — such as pumps, compressors, hydraulic cylinders, fuel lines, engines, gearboxes — and general industrial machines where fluid sealing is critical.