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ATTN: CANADA CUSTOMERS: If you need to buy seals from us, please call us instead of ordering online to arrange for shipping. As we can not use USPS to ship your package until the strike ends. Thank you!
SQ-109 NBR
UPC: 57240258
Nitrile Square Ring
NBR, Buna N
Shore A Description:
The hardness of rubber compounds is measured by the Shore A durometer; the higher the durometer, the harder the compound. Softer compounds stretch easier and seal better on rough surfaces. Harder compounds offer greater abrasion resistance and resistance to extrusion.
60 Shore A is softer than 70
70 Shore A is the standard
90 Short A is very stiff
Specs:
Square rings are similar to o-rings however the cross-section is square instead of round. The square cross-section helps prevent rolling of the seal.
Polymers vary from 18% to 50% acrylonitrile content. Resistance to petroleum products increases as acrylonitrile increases; conversely, low temperature flexibility decreases.
Material:
NBR (Natural Rubber)
Standard Service Temperature: -40°F - +250°F
Application:
Petroleum Fluids, Water (to 212°F), Silicon fluids, Ethylene Glycol, General Purpose
Nitrile compounds can exhibit excellent compression set, tear and abrasion resistance.
Not Compatible With: Phosphate esters, Ketones, Brake Fluids Strong acids, Ozone or weathering.