... GFLT GLT AFLAS HNBR... 2.High price performance ratio Product Description Item nameO ring manufacturing process MaterialSilicone,,FKM,FPM, ... the best inthe oil resistant rubber, good radiationresistance and high vacuum resistance; 2.Good electrical insulation, mechanical properties, ... thanks. Details Show oil and fuel resistance superb quality o ring manufacturing process HNBR FKM FPM VITON A VITON B ...