O-ring 105x3,5 NBR90

The O-ring 105×3,5 NBR90 is a static and dynamic seal with a circular (toroidal) cross-section, made of nitrile rubber (NBR) with a hardness of 90 Shore A. The ring profile is symmetrical: the round cross-section gives an even contact pressure on the sealing surfaces in the groove. The seal is designed for static joints (axial and radial) and for dynamic applications with slow reciprocating motion. NBR 90 Shore A is harder than standard NBR 70, which gives higher extrusion resistance at higher working pressures. Nitrile rubber has good resistance to mineral oils, greases, hydrocarbon fuels and water. The O-ring replaces sealing rings of the same profile (OR) made by Aston Seals, Dichtomatik, Guarnitec, Hallite, Kastas, Parker, Simrit, Trelleborg and SKF, in all sizes matching the metric size 105×3,5. Technical data: Seal type: O-ring (toroidal profile) Material: NBR (nitrile rubber) Hardness: 90 Shore A Inside diameter (d): 105 mm / approx. 4,134" Outside diameter (D): 112 mm / approx. 4,409" Cross-section / thickness (H): 3,5 mm / approx. 0,138" Media: mineral oils, greases, aliphatic hydrocarbons, water, silicone oils, nitrogen, oxygen, ozone, glycol-based fluids