Product Name: Black Brown Matt FKM/Viton Rubber Seal Ring Gasket O-Ring Model NO.: ULT-Matt-01 Cross-Section Shape: O-Rings Effect: Rotary Seal Application: Machinery, Industrial Component, Electronic Product, Vehicle, Household Appliance Material: Fluorocarbon Rubber Inner Diameter: 3mm to 30meters Cross Section: 1mm to 50mm Color: Black, Red, Brown, Green, Grey, Blue Process: Molding Hardness: 60sha to 90sha Certificates: SGS, FDA, Ce, RoHS, Reach and Ts16949 Working Temp: -20 to 250