Silicone Insulation Washer 1)Insulation washers 2)FDA washers 2)3)Heat resistant washers ... EPDM washers, NBR washers, PU washers, NR washers, etc.Silicone Insulation Washer SizeMaterialDuro Coloras per your requirementSilicone20~80 Shore Ablack, white ... C), the best rubber bears high and low temperature; Good electrical insulation, high stability to thermal oxidation and ozone, good chemical inertness ...