Feature:1. These gaskets come with standard production, suitable for cylinders with a diameter of 51mm2. Gasket is made of aluminum material, with good sealing effect and long service life3. Sturdy and durable, which is the most worth to buy product among gaskets4. This air compressor gasket come with excellent thermal conductivity, ductility and resistance5. Air pump gasket with stable structure, excellent performance and long service lifeSpec:Item Type: Air Compressor GasketModel: Cylinder 51 aluminum gasketFunction: Sealing functionMaximum Outer Diameter: Approx. 79mm / 3.1inMaterial: AluminumNote: Cylinder 51 means that the diameter of the cylinder is 51mmPackage List:10 x Air Compressor GasketNote:When using, pay attention to installation on the cylinder with a diameter of 51mm.