Metal Wrap Mat Properties, Specifications and Performance

The wound gasket was introduced to my country in the early 1990s. Its body (i.e. the basic gasket) is made of metal strips and filler strips with shaped or shaped cross-sections alternately spirally wound. The spiral wound gaskets specified in the original petroleum ministry standards belong to this type of gaskets. After the 1990s, in order to improve the strength and reliability of the gasket and facilitate installation and alignment, gaskets with inner rings, outer rings and inner and outer rings were used according to different flange connection forms. The only type of gasket filling tape is asbestos. By the beginning of the 1990s, flexible graphite (also known as expanded graphite) was successfully trial-produced and mass-produced in my country. Its main performance parameters are bulk density.~./product density.~./purity% ash content.% strong heat loss% (burning hours at ℃) melting point ℃ (melting sublimation) Shore hardness ~ tensile strength, compression resistance Strength, compression rate %, recovery rate %, sliding friction coefficient. (The abrasive parts are stainless steel) Resistance coefficient (face direction) Thermal expansion coefficient is (.~.)/℃ (face direction, from room temperature to ℃) Thermal diffusivity (.~ .)/(~℃) Nitrogen permeability plate thickness density ./ is. plate thickness density ./ is .
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