O-Ring 135x2 mm NBR 70 ShA

Applications

The O-Ring 135x2 mm (inner diameter 135 mm, cross-section 2 mm) manufactured from nitrile-butadiene rubber (NBR) with a hardness of 70 Shore A is designed for demanding industrial sealing and rubber gasket tasks. As a precision industrial sealing ring it serves as a static seal or dynamic seal in hydraulic and pneumatic systems, pumps, compressors, valves, gearboxes, fuel systems and general mechanical assemblies. It is especially suited for engineers and procurement managers seeking a reliable rubber seal in oil-, fuel- and grease-laden environments. Because of the material properties the rubber gasket resists petroleum-based fluids, hydraulic oils, lubricants and many chemical agents.

Advantages

• Material strength & durability: NBR 70 ShA offers an optimal balance of flexibility and mechanical resistance, making this O-Ring robust for industrial sealing, mechanical components and rubber gasket applications.

• Chemical and oil resistance: The nitrile compound is well proven for exposure to oils, fuels, lubricants and related media - making this sealing ring ideal for hydraulic and pneumatic applications.

• Precision sizing: With inner diameter 135 mm and cross-section 2 mm, the O-Ring 135x2 mm ensures a precise fit in grooves and housings tailored for the 135 mm size.

• Cost-effective bulk supply: Offered in industrial packaging, the sealing ring supports production, maintenance and procurement workflows by reducing downtime and inventory headaches.

• Rapid fulfilment: From our warehouse in Lublin (ul. Smoluchowskiego 1, building 4), we provide 24-hour delivery for B2B clients, enabling fast integration into procurement schedules.

Technical Data

• Product: O-Ring 135x2 mm NBR 70 ShA

• Inner Diameter (ID): 135 mm

• Cross-Section (CS): 2 mm

• Material: Nitrile-Butadiene Rubber (NBR), hardness 70 Shore A

• Typical service temperature: approx. -30 °C to +120 °C (application dependent)

• Compatible media: Mineral oils, hydraulic fluids, fuels, greases, water (in certain conditions)

• Not suitable for: Strong acids, ozone, weather-exposed outdoor sealing (without protection), certain brake fluids and aggressive ketones/esters.

• Standards: Metric size classification (e.g., DIN 3771 / ISO 3601) and generic O-Ring norms.

Why choose this sealing ring? For engineers and industrial buyers seeking a reliable rubber seal or static seal in applications where oil, fuel, greases or lubricants are present, this O-Ring meets common requirements: correct size (135x2 mm), proven material (NBR 70 ShA) and bulk availability for production or maintenance environments.

Purchase details: Supplied in industrial quantities, enabling integration into long-term sealing inventories. Sourced via our B2B platform, direct from Lublin, Poland, with 24h dispatch from ul. Smoluchowskiego 1, building 4.

FAQ

Q1: What is the difference between an O-Ring and other types of industrial sealing rings?
A: An O-Ring is a circular seal whose cross-section is a round cord (typically metric or imperial size). It functions as a primary sealing element in grooves or between two mating surfaces. Other sealing rings may include flat gaskets, lip seals or custom profiles. The O-Ring 135x2 mm NBR 70 ShA is a classic rubber seal for static or low-motion sealing, offering cost-effective industrial sealing performance.

Q2: Can this O-Ring be used in high-pressure hydraulic applications?
A: Yes, provided the groove design, compression set, pressure conditions and compatibility with the fluid are within specification. The NBR 70 ShA material offers adequate resilience and oil resistance for many hydraulic/pneumatic systems. However, for extreme pressures, high temperatures or aggressive chemicals you should verify groove dimensions, extrusion gaps and consider backup rings or more advanced elastomers.

Q3: What is the expected lifespan of the sealing ring under normal industrial conditions?
A: Lifespan depends on operating conditions, fluid compatibility, pressure cycles and installation quality. For standard environments (oil, hydraulic fluid, moderate temperature) an NBR 70 ShA O-Ring can provide long service life, reducing maintenance frequency. For harsh applications (elevated temperature, ozone exposure, outdoor weather) lifespan may be shorter and a different elastomer might be advisable.

Q4: Do I need to consider special installation procedures for the 135x2 mm size?
A: Yes — correct installation ensures optimal sealing performance. Ensure the groove is clean, the O-Ring is not twisted, lubrication is appropriate, and compression is within design limits. Because the cross-section is only 2 mm in this size, precise tolerance of groove depth and seal compression is critical to avoid extrusion or leakage.

Q5: Can you supply other sizes or hardnesses of NBR O-Rings?
A: Yes — our inventory covers a wide range of metric sizes, materials and hardnesses. If you require a variant (e.g., different ID, cross-section, Shore hardness, or material such as FKM, EPDM) our procurement team can assist with custom offers.