Giant
*Giant Part # 07910
*Old Giant Part # 07910A
*"Triangle" O-Ring
*50.52mm x 1.78mm
*Buna 70 Duro Material *This is no longer molded into a triangle shape, the replacement will be a standard ring. To install apply grease to the o-ring and fit it into the triangle groove, the grease should hold it in place while the suction flange is attached.