Sealing material requirements

Sealing material shall meet the requirements of sealing function. Due to different medium to be sealed, and the different working conditions of the equipment, materials with different accory plastic padlock security seals requirements applicability. Sealing material requirements are: ① material density is good, easy media leaks; ② have adequate mechanical strength and hardness; ③ compressibility and resilience, permanent deformation; under ④ no softening temperature, does not decompose at low temperatures do not harden, does not rattle; ⑤ good corrosion resistance in acid, alkali, oil medium, long-term work, the volume of a small change in hardness, and do not adhere to the metal surface; ⑥ low coefficient of friction, wear resistance good; ⑦ has posted the full sealing surface softness; ⑧ good resistance to aging, durable; convenient ⑨ manufacturing, cheap, drawing easy. Obviously, any kind of material to completely satisfy the above requirements is not possible, but the material having excellent sealing performance can meet most of the requirements described above.