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Thedifferentcharacteristicsofdomesticvalve..

Hard seal and soft seal can be mutually complementary, in terms of soft seal for sealing is relatively good, but now the seal of the seal was able to meet the corresponding requirements,soft seal has the advantage of good sealing performance, shortcomings are easy to aging,wear, short service life. Seal and long service life, but the seal is relatively worse than the soft seal.

Soft seal: both sides of the side of the metal material, the other side is a nonmetal material haselasticity is called "soft seal". The seal performance is good, but not high temperature resistant,easy to wear, mechanical poor. Such as: steel and rubber; steel + PTFE polyethylene.

Soft seal is the sealing side is relatively low in the hardness of the material, in general, the soft seal seat made of non metal material with certain strength, hardness and heat resistance, good sealing performance, can achieve zero leakage, but life and adaptability to temperature thanpoor seal metal production, seal performance is relatively poor, although the manufacturer claims can be done with zero leakage. Soft sealing of part of the corrosive material can not meet the technical requirements, the seal can be solved!

Seal: seal on both sides of the metal materials or hard materials are called "seal". The sealing performance is poor sealing of this, but the high temperature resistance, wear resistance, good mechanical performance. Such as: steel, steel; steel + Cu + graphite; steel; steel and alloy steel(; the steel may be of cast iron, cast steel, alloy steel may also be welding, spraying alloy).