O-ring Seal in NBR, Thickness 3 mm, Diameter 54 to 184 mm | Sealing Tech-G

The Sealing Tech-G NBR (Nitrile Butadiene Rubber) O-ring with 3 mm thickness is the O-ring sealing solution for medium and large diameter industrial applications, available in 71 sizes from 54 mm to 194 mm, including precise decimal dimensions (54.5 / 56.2 / 57.2 / 59.5 / 62.2 / 64.5 / 69.5 / 74.5 / 79.5 / 124.5 / 164.5 mm). The 3 mm (CS) thickness is one of the most commonly used in the industry for large diameter seals due to its mechanical robustness and optimal compression capacity. Highly compatible with oils, fuels, lubricants, water, and numerous non-polar solvents, it is the elastomer of choice for environments with hydrocarbons.

Applications

• High-pressure hydraulic systems: cylinders, large diameter valves, and industrial actuators
• Centrifugal and positive displacement pumps: cover, flange, and body seals
• Large industrial valves: seat, stem, and butterfly seals
• Oil and gas industry: seals in flanges, inspection covers, and process equipment
• Heat exchangers and pressure vessels: closing gaskets and covers
• Heavy machinery and construction equipment: hydraulic cylinder seals
• Heavy automotive: engine, transmission, and fuel system seals in industrial vehicles
• Direct replacement for original seals in imported equipment with metric dimensions

Technical Specifications

• Material: NBR (Nitrile Butadiene Rubber)
• Seal thickness (CS): 3 mm
• Available internal diameters: 54 / 54.5 / 55 / 56 / 56.2 / 57 / 57.2 / 58 / 59 / 59.5 / 60 / 62 / 62.2 / 64 / 64.5 / 65 / 66 / 67 / 68 / 69 / 69.5 / 70 / 71 / 72 / 74 / 74.5 / 75 / 76 / 79 / 79.5 / 80 / 82 / 84 / 85 / 86 / 90 / 92 / 94 / 96 / 97 / 99 / 102 / 112 / 114 / 115 / 120 / 122 / 123 / 124 / 124.5 / 125 / 128 / 130 / 132 / 134 / 135 / 140 / 142 / 144 / 145 / 148 / 150 / 154 / 155 / 160 / 164.5 / 170 / 175 / 180 / 190 / 194 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 3 mm, nitrile o-ring 3mm thickness, large diameter NBR round packing, nitrile o-ring 3mm CS, NBR O-ring 3mm, industrial NBR o-ring, nitrile rubber O-ring large diameter, industrial o-ring packing Honduras, 3mm large diameter o-ring.