HYDROGENATED NITRILE (HNBR)
HNBR is achieved by hydrogenated NBR. Greatly improved wear and extrusion resistance over standard NBR. Good chemical compatibility and it is excellent heat and oil resistant including exposure to such oil additives as detergents, anti-oxidants and anti-wear agents. It also shows a up to five times higher resistance to sour gas and ozone resistance. Has an extended high temperature range.
Temperature Range (dry heat)
Standard Compound: -20°C to +150°C
Primary Uses
Seal and gasket application requiring additional resistance to chemicals and slightly higher temperatures than can be handled with NBR. O-Rings, washers, rod and piston seals, back-up rings, gaskets.
Application Advantages
» Excellent heat and oil resistance
» Improved fuel and ozone resistance (approximately 5X over Nitrile)
» Excellent abrasion, compression set, tensiles, and tear properties
» Exhibit better wear resistance than standard nitrile
Application Disadvantages
» Increased cold flow with hydrogenation
» Decreased elasticity at low temperatures with Hydrogenation over standard nitrile
» Not use for exposure to ketone, esters, aromatic fluids
