O-ring Seal in NBR, Thickness 2.5 mm | Sealing Tech-G

The Sealing Tech-G NBR (Nitrile Butadiene Rubber) O-ring with 2.5 mm thickness is the most versatile O-ring sealing solution in our NBR line, available in the widest range of internal diameters: 75 sizes from 4 mm to 145 mm. Highly compatible with oils, fuels, lubricants, water, and numerous non-polar solvents, it is the reference elastomer for environments with hydrocarbons. Its advanced formulation ensures excellent abrasion and tear resistance, extending seal life and minimizing maintenance costs. The 2.5 mm thickness (CS) is one of the most commonly used in the industry due to its balance of mechanical strength and optimal compression.

Applications

• Hydraulic and pneumatic systems: cylinders, valves, actuators, and manifolds
• Automotive: engine, transmission, fuel, and cooling system seals
• Pumps and compressors: static and dynamic seals in contact with oils
• Industrial valves: seat and stem seals in oily fluids
• Oil and gas industry: seals in equipment exposed to hydrocarbons
• General machinery: inspection covers, lids, and connections with oil or water
• Industrial instrumentation: precision seals in measurement and control equipment
• Food and pharmaceutical industry (standard grade): non-critical applications with water

Technical Specifications

• Material: NBR (Nitrile Butadiene Rubber)
• Seal thickness (CS): 2.5 mm
• Available internal diameters: 4 / 5 / 6 / 7 / 7.5 / 8 / 9 / 9.5 / 10 / 11 / 11.5 / 12 / 12.5 / 13 / 13.5 / 14 / 15 / 15.5 / 16 / 17 / 18 / 19 / 20 / 21 / 22 / 23 / 24 / 25 / 26 / 27 / 28 / 30 / 32 / 33 / 34 / 35 / 36 / 37 / 38 / 39 / 39.5 / 40 / 41 / 42 / 44 / 45 / 47 / 48 / 50 / 51 / 52 / 53 / 55 / 56 / 58 / 60 / 61 / 63 / 65 / 67 / 68 / 70 / 73 / 76 / 79 / 80 / 85 / 86 / 90 / 92 / 95 / 100 / 115 / 135 / 145 mm
• Temperature range: -30 °C to +100 °C (peaks up to +120 °C)
• Chemical resistance: Mineral oils, fuels, lubricants, water, non-polar solvents
• Configuration: O-ring
• Sales unit: Unit
• Country of origin: Taiwan
• Brand: Sealing Tech-G

Chemical Compatibility

NBR is compatible with mineral oils, fuels, lubricants, water, and non-polar solvents. It is not compatible with concentrated acids, ketones, esters, ozone, or glycol-based brake fluids. For these applications, consider EPDM or VITON O-rings.

Other Common Names

This component is also known as: NBR O-ring 2.5 mm, nitrile O-ring 2.5, NBR round gasket, nitrile O-ring seal 2.5mm, NBR O-ring 2.5mm CS, nitrile rubber O-ring, NBR O-ring gasket, nitrile rubber O-ring, industrial O-ring gasket Honduras, 2.5mm thickness O-ring.