How to choose the right O-ring

Time:

2024-07-10

1. Hydrogenated butyl cyanide rubber It has good corrosion resistance, pressure resistance and tear resistance, and can also resist the invasion of ozone, sunlight and oil pollution. It is suitable for O-rings in automobile engines, washing machines and new refrigeration systems, but cannot be used in esters, alcohols and aromatic solvents. 2. Butadiene-cyanide rubber

1. Hydrogenated butyl cyanide rubber

It has good corrosion resistance, pressure resistance and tear resistance, and can also resist the invasion of ozone, sunlight and oil pollution. It is suitable for O-rings in automobile engines, washing machines and new refrigeration systems, but cannot be used in esters, alcohols and aromatic solvents.

2. Butadiene-cyanide rubber

It is usually used for water, silicone oil, glycol hydraulic oil and other media, but not suitable for polar solutions, such as ozone and ketone nitro hydrocarbons.

3. Silicone rubber

It can resist the damage of cold, heat, ozone and atmospheric aging, but it has poor tensile properties and is not resistant to oil. Generally used in microwave ovens, water heaters, electric irons, water dispensers, kettles and other household appliances O-ring.

4. Fluorine rubber

It has good ozone resistance and weather resistance, high temperature resistance is better than silicone rubber, but the cold resistance is poor. Generally used in fuel systems and O-rings in chemical plants. Not recommended for use in a mixture of ketones and nitrates.

5. Fluorosilicone rubber

Fluorosilicone rubber combines the advantages of silicone rubber and fluorine rubber. It can resist the attack of oxygen-containing compounds, fluorine-containing solvents and aromatic solvents. It has good oil resistance, fuel resistance and solvent resistance. O-rings are commonly used in military and aerospace applications and are not recommended for brake fluids and ketones.

6. Butyl rubber

It has good heat resistance and air tightness, can resist the invasion of sunlight, polar solvents and ozone, and has good insulation. It may be exposed to oxides or animal and vegetable oils. It is commonly used in vacuum equipment and is resistant to chemical O-rings. It cannot be used with petroleum, aromatics or kerosene.

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