O-Ring 26.58 x 3.53 NBR 90 ShA

Applications

The precision metric O-Ring 26.58 x 3.53 mm, manufactured from nitrile-butadiene rubber (NBR) with a hardness of 90 ShA, is designed for demanding industrial sealing tasks. Ideal as a rubber gasket, sealing ring or industrial sealing component, this part unlocks high reliability in static and light dynamic applications across hydraulics, pneumatics and fluid power systems. Particularly suited for valves, compact cylinders, small actuators and maintenance kits, it addresses the needs of engineers seeking a durable metric solution in hydraulic and pneumatic applications. Supplied in a pack of 100, it supports bulk procurement, maintenance spares and production line stocking. The high‐hardness NBR compound delivers strong chemical resistance to oils, greases and standard industrial fluids, enabling long service life and fewer unscheduled shutdowns.

With inner diameter 26.58 mm and cross section 3.53 mm, this dimension aligns with metric gland standards and custom assemblies. It offers an efficient option for operations engineering teams selecting a reliable technical sealing component for demanding environments where downtime is costly.

Advantages

• High durability and high hardness (90 ShA): The firm NBR material resists deformation and extrusion under load, essential for maintaining seal integrity in industrial settings where reliability is critical.

• Pack of 100 - optimized for B2B purchasing: A convenient bulk format tailored to MRO, production facilities and procurement operations, enabling cost-effective stocking and fast change-out when necessary.

• Designed for industrial sealing in hydraulics & pneumatics: Engineered for use as a robust O-Ring in hydraulic cylinders, pneumatic valves, fluid control systems and general industrial gear, delivering dependable performance in industrial environments.

• Compact metric size (26.58 x 3.53 mm): Appropriate for small bore glands and constrained spaces while still providing excellent sealing capacity—a smart choice for precision machinery and maintenance sectors.

• Local availability and swift logistics: Stocked in our warehouse at Lublin, ul. Smoluchowskiego 1, building 4. With 24h delivery, you can restock critical seals quickly and maintain continuous operation.

Technical Data

• Product type: O-Ring / sealing ring (metric)

• Dimensions: Inner Diameter (ID) 26.58 mm; Cross Section (CS) 3.53 mm

• Material: Nitrile Butadiene Rubber (NBR)

• Hardness: 90 Shore A

• Typical use: Static or light dynamic sealing in hydraulic & pneumatic systems, industrial machinery

• Indicative temperature range: approx. −30 °C to +100/120 °C depending on media and conditions

• Colour: Black

• Packaging: Pack of 100 pieces

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

• Delivery: 24 h for B2B orders

FAQ

Q1: Why select a hardness of 90 ShA for this O-Ring?
A: A 90 ShA hardness in NBR provides a firm seal that resists compression set, deformation and extrusion under load—ideal for demanding industrial sealing where minimal deformation and long life are required.

Q2: Is NBR suitable for oil, grease and hydraulic fluids?
A: Yes—Nitrile (NBR) is widely used for rubber gaskets and sealing rings in hydraulic and pneumatic systems due to its good compatibility with mineral oils, greases and industrial fluids. It is often selected for its balance of cost and performance.

Q3: Can this O-Ring be used in dynamic movements (reciprocation or rotation)?
A: This version is optimized for static sealing or light dynamic motion. For high-speed or heavy dynamic motion applications, ensure the design allows for the material’s limitations or consider alternative elastomers.

Q4: How do I ensure correct fit for ID 26.58 mm and CS 3.53 mm?
A: You need to match the gland or sleeve inner diameter close to 26.58 mm and ensure the cross-section clearance matches 3.53 mm. Proper compression (squeeze) and material compatibility with your media are key to reliable performance.

Q5: What are the procurement advantages of a pack of 100 pieces?
A: A pack of 100 supports streamlined inventory management, cost-efficiency in bulk purchasing and rapid replacement during maintenance. This format suits B2B operations, service kits and production line stocking.