HNBR O-ring 70 Shore A

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	Dimensions	Material	Hardness (Shore A)	Certification

O-ring Black	94.94 mm x 2.62 mm	HNBR	70 Shore A	Nee
O-ring Green	9.20 mm x 2.62 mm	HNBR	70 Shore A	Nee
O-ring Black	10.70 mm x 3.53 mm	HNBR	70 Shore A	Nee
O-ring Black	9.25 mm x 1.78 mm	HNBR	70 Shore A	Nee
O-ring Green	110.73 mm x 3.53 mm	HNBR	70 Shore A	Nee
O-ring Black	69.23 mm x 6.99 mm	HNBR	70 Shore A	Nee
O-ring Black	37.48 mm x 3 mm	HNBR	70 Shore A	Nee
O-ring Black	424 mm x 6.99 mm	HNBR	70 Shore A	Nee
O-ring Green	26.60 mm x 2.95 mm	HNBR	70 Shore A	Nee
O-ring Green	196.54 mm x 2.62 mm	HNBR	70 Shore A	Nee
O-ring Green	50.17 mm x 5.33 mm	HNBR	70 Shore A	Nee
O-ring Green	183.76 mm x 3.53 mm	HNBR	70 Shore A	Nee
O-ring Green	56.83 mm x 2.62 mm	HNBR	70 Shore A	Nee
O-ring Black	50.53 mm x 1.78 mm	HNBR	70 Shore A	Nee
O-ring Green	94.63 mm x 6.99 mm	HNBR	70 Shore A	Nee
O-ring Green	66.5 mm x 1.78 mm	HNBR	70 Shore A	Nee
O-ring Black	329.58 mm x 5.33 mm	HNBR	70 Shore A	Nee
O-ring Black	50.17 mm x 5.33 mm	HNBR	70 Shore A	Nee
O-ring Green	456.07 mm x 3.53 mm	HNBR	70 Shore A	Nee
O-ring Black	72.63 mm x 3.53 mm	HNBR	70 Shore A	Nee
O-ring Black	18.65 mm x 3.53 mm	HNBR	70 Shore A	Nee
O-ring Black	185 mm x 3.55 mm	HNBR	70 Shore A	Nee
O-ring Black	54 mm x 8 mm	HNBR	70 Shore A	Nee
O-ring Green	71.13 mm x 2.62 mm	HNBR	70 Shore A	Nee
O-ring Black	132.73 mm x 6.99 mm	HNBR	70 Shore A	Nee
O-ring Green	266.08 mm x 6.99 mm	HNBR	70 Shore A	Nee
O-ring Green	21.90 mm x 2.62 mm	HNBR	70 Shore A	Nee
O-ring Black	278.78 mm x 6.99 mm	HNBR	70 Shore A	Nee
O-ring Green	25.13 mm x 1.78 mm	HNBR	70 Shore A	Nee
O-ring Black	25.13 mm x 1.78 mm	HNBR	70 Shore A	Nee
O-ring Black	253.58 mm x 6.99 mm	HNBR	70 Shore A	Nee
O-ring Black	40.65 mm x 6.99 mm	HNBR	70 Shore A	Nee
O-ring Black	56.83 mm x 2.62 mm	HNBR	70 Shore A	Nee
O-ring Black	82.29 mm x 1.78 mm	HNBR	70 Shore A	Nee
O-ring Green	113.99 mm x 2.62 mm	HNBR	70 Shore A	Nee
O-ring Black	400.5 mm x 6.99 mm	HNBR	70 Shore A	Nee
O-ring Green	28.26 mm x 2.62 mm	HNBR	70 Shore A	Nee
O-ring Black	240.90 mm x 3.53 mm	HNBR	70 Shore A	Nee
O-ring Black	202.88 mm x 2.62 mm	HNBR	70 Shore A	Nee
O-ring Green	53.66 mm x 2.62 mm	HNBR	70 Shore A	Nee

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HNBR (Hydrogenated Nitrile Butadiene Rubber) is obtained by fully or partially hydrogenating the double bonds in nitrile butadiene rubber with hydrogen into single bonds. Compared to NBR, HNBR has better properties in terms of oil resistance, temperature resistance and strength. It is more resistant to ozone and aggressive substances and can be used from -40 ° C to 165 ° C (with peaks up to 190 ° C). HNBR was developed in the 1970s by, among others, Shell [3] and Bayer (now Lanxess) [4]; Bayer / Lanxess' brand name is Therban. Another brand name was Tornac from Polysar, which was subsequently bought up by Bayer.
HNBR has been developed to meet higher temperatures than the standard NBR, while it is resistant to oil-based oils. Obtained by hydrogenating the nitrile copolymer, HNBR fills the space left between NBR, EPDM and FKM elastomers where high temperature conditions require high tensile strength, while excellent resistance to engine oils, acid gas, amine / oil blends, oxidized fuels and Hydronated nitrile rubber (Hydrogenated nitrile rubber HNBR)
Patented by Bayer in 1975 and the first to be marketed in 1986 under the name Therban.

HNBR is a saturated NBR version with a much higher temperature resistance. With ACN levels of 18-49% and a saturation degree of 80-99%. Temperature resistance possibilities from -45 degrees to +165 degrees and peaks up to `80 degrees.

You could say that HNBR fills the gap between NBR and FKM. HNBR is still resistant to aggressive media at higher temperatures.
lubricating oils remain.
Hydrogenated Nitrile Butadiene Rubber (HNBR) has been developed to bridge the price-performance gap between FKM / FVMQ and NBR. Compared with NBR, HNBR has better oil resistance, temperature properties and strength.

HNBR benefits:
• Resistant to mineral oil based hydraulic fluids
• Resistant to animal and vegetable fats
• Resistant to diesel fuel, ozone, acid gas, diluted acids and bases
• Resistant to new organic oils (organic oils)
• Suitable for high dynamic loads and has good wear resistance
• Suitable for temperatures from -30 degrees C to +150 degrees C
• Mechanically strong
• Good compression set / good "hot tear" / good ozone and aging resistance
• Resistant to high energy radioactive radiation
• Good resistance to hot water and steam
• Temperature resistance to prolonged +150 degrees C with higher peaks
• Good resistance to various media
• Excellent heat and oxidation resistance
• Can be used in water and steam
• Temperature range from -30 degrees to +160 degrees C
• Excellent resistance to automotive fluids (engine oil, coolant, fuel etc.)

Cons HNBR:
• Considerably more expensive
• Not resistant to chlorinated hydrocarbons
• Not resistant to polar solvents (ketones, eaters and esters)
• Not resistant to strong acids

On this page we offer our range of 70 Shore A O-Rings. Search for your specific O ring by using the filters on the left of the page or take your time and browse our wide range of our products. When you can not find the product you are looking for in our 70 Shore A made from HNBR, please send us a Direct Enquiry. Together we can discuss the specifications and find the right product for you.

Cons HNBR:
• Considerably more expensive
• Not resistant to chlorinated hydrocarbons
• Not resistant to polar solvents (ketones, eaters and esters)
• Not resistant to strong acids