Food Grade Silicone O Rings
Food Grade Silicone O Rings is also known as Silicone O-Rings, Silicone Seal Rings, Silicone Seal
Gasket, Silicone Sealing Gasket, Silicone Sealing Rings. It's made of food grade silicone material. It's
odorless, BPA free and no harm to health. It mainly is used for the function of waterproof sealing and
preservation of daily suppliers. Such as crisper, electric rice cooker, water dispenser, lunch box, heat
preservation box, heat preservation box, water cup, oven, magnetizing cup, coffee pot etc.
What is Food Grade Silicone?
As the name implies, silicone products can be directly in contact with food. Food grade silicone is the inorganic polymer colloidal material formed by condensation of silicic acid. The main ingredients is SiO2·nH2O, non-toxic and odourless. The chemistry performance is stable. Under normal conditions, it does not react with any acid-base salts except caustic soda and hydrofluoric acid.It's non-toxic, odourless, high transparency and anti-yellow. Soft, with good elasticity and no deformation. No cracking, with long service life, cold and high temperature resistance. With higher tear strength and superior electrical performance.
There are two main international standard test FDA and LFGB for Food Grade Silicone. FDA-compliant means passing the Code of Federal Regulations, specifically CFR21.177.2600, CFR21.177.1210.
There are three molding methods for Food Grade Silicone O Rings
1. Silicone Compression Molding for Food Grade Silicone O Rings.
2. Liquid Silicone Injection Molding for Food Grade Silicone O Rings.
3. From Silicone Compression Molding switvh to Liquid Silicone Injection Moulding.
Feature of Food Grade Silicone O Rings
1. Food Grade Silicone O Rings can be used under the temperature range of -40 ℃ ~+250 ℃ for a long time.
2. Silicone Seal Rings is with excellent sealing performance, waterproof and leakproof.
3. Silicone Seal Gasket is with good fresh-keeping effect,completely non-toxic and tasteless.
4. Silicone O Rings can be heated under high temperature, no deformation, no production of harmful substances.
5. Food Grade Silicone O Rings is with good tensile resistance, can pass professional inspection and test.
6. Food Grade Silicone Sealing Rings is anti-yellow and fadeless after long-term usage.
7. Food Grade Silicone Sealing Gasket is with corona resistance, arc resistance, high and low temperature
resistance, aging resistance, high temperature resistance. Comply with FDA, LFGB, SGS test.
Food Grade Silicone O Rings Application
Advantage of Food Grade Silicone O Rings
Heat Resistance: Silicone is with better heat resistance than rubber.
Food Grade Silicone O Rings can be used almost forever at 150° with no performance change. It can be used continuously for 10000 hours at 200° and for a period of time at 350°. It is widely used in heat resisting situations, such as hot water bottle sealing ring, heat resisting handle of pressure cooker ring etc.
Low Temperature Resistance: Lowest temperature resistance of rubber is -20℃-30℃, but Food Grade Silicone O Rings is still with good elasticity under -60℃-70℃. Some special formulations of silicone can also withstand extremely low temperatures. Such as low temperature silicone o rings.
Food Grade Silicone O Rings is not recommended to be used in most thickened solvents, oils, thickened acids and diluted sodium hydroxide.