Specification Brand : uxcell BulletPoint1 : Product Name : O Ring;Material : Silicone BulletPoint2 : Outside Diameter : 160mm / 6.29";Inner Diameter : 155mm / 6.1" BulletPoint3 : Thickness : 2.5mm/ 0.098";Color : Red BulletPoint4 : Weight : 4g BulletPoint5 : Package Content : 1 x Silicone O Ring Color : Red ExternallyAssignedProductIdentifier1 : 608641735482 ExternallyAssignedProductIdentifier2 : 0608641735482 ExternallyAssignedProductIdentifier3 : 00608641735482 ItemName : uxcell® Red Silicone O Ring Oil Seal Gasket Washer Metric 160mm x 2.5mm ItemPackageDimensions_Height : 15 centimeters ItemPackageDimensions_Length : 1 centimeters ItemPackageDimensions_Width : 10.5 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : o-ring-seals Manufacturer : uxcell Material : Silicone ModelNumber : a12040200ux0402 PartNumber : a12040200ux0402 ProductDescription : Silicone supports a wide range of temperatures and has excellent resistance to weathering and ozone. It fits for vacuum tube to stop noise and rattle of the tube. Made of silicon and not get hot and burn up.