Series 20S-U70A Black polyurethane O-Rings are rugged, versatile seals, suitable for both dynamic and static sealing applications.
They are manufactured from thermosetting liquid cast polyurethane of 70A Durometer, and have exceptionally good abrasion and extrusion resistant qualities.
Polyurethane normally gives up to 10 times the service of nitrile rubber, this is why we have started to produce 70A Polyurethane O-Ring in Black. Our Polyurethane is a high grade material that will work in -40 Degrees F to 195 Degrees F.