... products with small weight.10. Seal parts with silicone rubber which with high anti-abrasion, anti-heat, anti-acid ... ,anti-corrosion function, with fluorine rubber which is high anti-abrasion, anti-resistance, anti-acid, ... viscosity products, such as pesticide, medicine, toothpaste, foods(sesame paste, sweet paste, tomato sauce, peanut butter, chocolate jam, cream), chemical glass ...