Specification Brand : uxcell BulletPoint1 : Product Name : Mechanical Seal;Internal Diameter : 12mm / 0.5" BulletPoint2 : Ceramic Rotary Ring Size : 25 x 12 x 7mm / 1" x 0.47" x 0.28"(OD*Inner Dia*T);Overall Size : 25 x 23mm / 1'' x 0.9" (D*H) BulletPoint3 : Material : Rubber, Metal, Ceramic;Color : Black, Silver Tone BulletPoint4 : Net Weight : 42g BulletPoint5 : Package Content : 3 x Mechanical Seal ExteriorFinish : Copper ExternallyAssignedProductIdentifier1 : 711331025647 ExternallyAssignedProductIdentifier2 : 0711331025647 ExternallyAssignedProductIdentifier3 : 00711331025647 ItemName : uxcell 3PCS Ceramic Ring 12mm Inner Dia Water Pumps Shaft Mechanical Sealing ItemPackageDimensions_Height : 2.7 centimeters ItemPackageDimensions_Length : 6.2 centimeters ItemPackageDimensions_Width : 4.5 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : mechanical-seals Manufacturer : uxcell Material : Rubber MeasurementSystem : Metric MetalType : Copper ModelNumber : a14060400ux0580 NumberOfPieces : 1 PartNumber : a14060400ux0580 ProductDescription : Designed with single coil spring and rubber bellows. This mechanical seal is used in water pumps and submersible pumps, is suitable for wide range of sealing application, such as plants, water, refrigeration, air conditioning, etc.