Does PTFE gasket have a weatherability, ozone resistance and chemical resistance?
Q: PTFE gasket has a weatherability, ozone resistance and chemical resistance?
A: Yes. PTFE gasket high temperature resistance is better than silicone rubber, excellent weather resistance, ozone resistance and chemical resistance, cold resistance is bad. For most of the oil and solvents have the ability to resist, PTFE gasket alternatives, especially acids, aliphatic hydrocarbons and animal and vegetable oils. Combined with diesel engines, fuel systems and chemical plant sealing needs. It is not recommended for use in ketones, low molecular weight esters and mixtures containing nitrates. General use temperature range of -20 ℃ ~ 220 ℃.
PTFE gasket has excellent heat resistance, cold, ozone resistance, resistance to atmospheric aging function. Have a good insulation function. But the tensile strength is worse than the general rubber and not oil. For household appliances such as electric water heaters, irons, microwave ovens and so on. Also used in a variety of contact with the human body supplies, such as water bottles, drinking fountains and so on. It is not recommended for use in most concentrated solvents, oils, concentrated acids and sodium hydroxide. General use temperature range of -55 ℃ ~ 250 ℃. Suitable for use with oil-based hydraulic oil, glycol-based hydraulic oil, diester lubricants, gasoline, water, silicone grease, silicone oil and other media. Is the most widely used, the lowest cost of rubber seals. Not suitable for use in polar solvents such as ketones, ozone, nitrohydrocarbons, mek and chloroform. The general use of the temperature range of -40 ℃ ~ 120 ℃.
PTFE gasket oil, solvent resistance, fuel-resistant oil and high and low temperature resistance are good. It can resist the corrosion of oxygen-containing compounds, solvents containing fragrant hydrocarbons and chlorine-containing solvents. Generally used for aerospace, aerospace and military use. Not recommended for exposure to ketones and brake oil. General use temperature range of -50 ℃ ~ 200 ℃.