... ResistanceBDABOxidation ResistanceBAAASunlight ResistanceCAAATear ResistanceBDDCWeathering ResistanceBAAANotes:1. A=Excellent, B=Good, C=Fair, D ... We have a state of the art laboratory and can modiy elastomers in many to include ... temperature, abrasion, high rpm, durometer etc. 3.About our company As a ... us.We are always ready to service for you! 4.We guarantee our product quality ...