Hydrogenated Nitrile Butadiene Rubber
(HNBR), also known as Highly Saturated
Nitrile (HSN), is special class of nitrile
rubber (NBR) that has been
hydrogenated to increase saturation of the butadiene segment of the carbon polymer backbone.
Subsequent improvements to the material properties, over that of
a nitrile rubber (NBR), include greater thermal stability,
broader chemical resistance, and greater tensile strength.
HNBR is classified by ASTM as a DH-type polymer. This classification
indicates 150ºC service temperature as well as less than 30% swell in IRM 903
oil. HNBR can be formulated to meet application temperatures ranging between
-50°C and 165ºC.
Seals Eastern is proud to have chosen Zeon Chemical
Zetpol ® brand of HNBR polymer as the backbone of our
HNBR (HSN) o-rings, seals, and packer elements.
Seals Easterns series of formulated HNBR compounds:
||General service o-ring and packer element
||-50C Tg extreme low temperature service rubber.
||General service o-ring and packer element rubber.
||High modulus, extrusion resistant, o-ring and packer
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