Mechanical Properties
1. Hardness (Shore A/D): Typically used to indicate the softness or hardness of the material.
2. Tensile Strength: The maximum stress that the material can withstand before breaking.
3. Elongation at Break: The percentage increase in length of the material when it is stretched until it breaks.
4. Tear Strength: The ability to resist the expansion of cracks.
5. Compression Set: The degree of deformation that the material retains after being compressed and the stress is removed, measuring the elasticity recovery ability.
6. Abrasion Resistance: The performance of resisting surface wear.
Physical Properties
1. Specific Gravity/Density: The mass per unit volume.
2. Temperature Range: The lowest and highest temperatures at which the material can safely operate.
3. Water Absorption: The amount of water absorbed by the material.
Tolerance Properties
1. Oil/Solvent Resistance: The ability to resist erosion by oil, fuel, and solvents.
2. Aging/Weather Resistance: The ability to resist aging caused by light, heat, oxygen, ozone, etc.
3. Ozone Resistance: The ability to resist attack by ozone.
4 Chemical Resistance: The ability to resist acids, bases, and corrosive media.
Special Properties and Applications
1. Electrical Insulation: The characteristic of being used as an insulating material.
2. Flame Retardancy: The property of not self-igniting or self-extinguishing.
3. Gas Permeability: The ease with which gases pass through the material.
4. Adhesion: The performance of bonding with other materials (such as metals, plastics).