mechanical oil seal: 1>silicone rubber materials 2>size, design, color is available 3>perfect sealability mechanical oil seal, rubber oil seal, o-rings, silicone o-rings, silicone seals, seals, rubber seals, silicone rubber seals, silicone rubber product:1>100% silicone rubber materials2>size, design, color is available3>perfect sealability4>cheap price with good qualityWelcome to contact us!