What is this?Small silicone O-rings are used for dustproof sealing of small electronic devices to protect internal components from dust; used in automobile brake systems, air conditioning systems and other parts to seal and prevent liquid leakage; used in washing machines, refrigerators, etc. to prevent water or gas leakage, and they provide precise sealing protection in micro-mechanical equipment and instruments.What will I get?The silicone seal washers, we provide here, is in the size of: Outer diameter: 56mm (2.2 inch); Inner diameter: 52 mm (2.05 inch); Cross Section Diameter: 2 mm (0.078 inch); Shore Hardness: 50A In the package of: 30 x silicone rubber o-ringsIs there any advantages of the product?The sealing gasket is made of silicone rubber, waterproof, anti-static, anti-ozone, low compression set, strong elasticity, temperature and cold resistance, the temperature range from -30℉ (-30℃) to 392℉ (200℃)How to use it?Clean the sealing surfaces thoroughly to remove any dirt, debris, or old O-ring material. Ensure that the groove where the O-ring will be placed is free of damage that could cause tearing.What should  I notice?1. Regularly inspect the VMQ O-ring for signs of wear, damage, or degradation. 2. Please select the right diameter.