o ring seal kit 1.Quick shipment. 2.ROHS&REACH approved. 3.Most competitive price. 4.Small quantity accepted. Details about o ring seal kit : Materials Comply with ROHS, NBR, Silicone (VMQ), EPDM, Viton, etc.Characteristics Good physical and chemical properties.Hardness 20 to 90 shore A or as your request.Tolerance Strictly upon international standard, no flash.Color Black, transparent, green, ...