Used as sealants for hydraulic, pneumatic and oil systems. They have the following advantages over traditional types of rubber:
- Operating temperature is from -60 to + 3150C.
- Wide hardness range from 30 to 80 Shore.
- Resistant to aggressive environments. Liquids: fresh water, sea water (including boiling water). Gas: ammonia, oxygen, ozone. Salts: sodium carbonate, copper sulphate, iron chloride, sodium chloride. Acids: nitric (10%), sulfuric (30-50%), hydrochloric (10-18%), stearic, acetic (30%), phosphoric. Food products: alcohol, table vinegar, butter oil and vegetable oil. Solvents: hydrogen peroxide, ethylene glycol, ethyl alcohol.
- High resistance to aging in air and direct sunlight.
- Dielectric properties. At room temperature, silicone has electrical insulating properties. At temperatures above 1000C, it exceeds all elastomers in terms of electrical insulation features. When burning insulation from silicone rubber, a non-conductive layer of silicon oxide remains.
- When using fluorosilicone, it additionally possesses oil and petrol resistance.
It is possible to make silicone cords from foamed (porous) silicone.
- Cords of round cross-section with a diameter of 1 to 50 mm.
- Rectangular cords with a side of 3 to 35 mm.