One, Ding Qing import X ring has many advantages and wide use
Specification size: inner diameter * line diameter;
Implementation standards: American Standard AS568, Japanese standard JIS2401-P, JIS2401-G, etc.
Material hardness: NBR70 Black;
Service temperature: Limit: -40~120 C, long term: -20~100 C;
Features: resilience, good sealing, wear resistance, high temperature resistance, oil resistance, stable working in different media and long service life.
Wide range of applications: in gas or liquid medium, it can be used in various static and dynamic environments for a long time. The X type seal ring is usually installed in the groove of the outer circle or the inner circle, and has a sealing function in the rectangular groove. It is widely used in aerospace, electronic and electrical appliances, agricultural machinery, sanitary ware, mining machinery, automobiles, watches, ships and other industries.
Two. What is the general method of Ding Qing's import X ring?
It is mainly divided into 2 forms, one is the inner diameter * the line diameter, the other is the outer diameter * diameter. At present, the usual method used in foreign and domestic is the expression of inner diameter * diameter. For example, American Standard AS568 and Japanese standard G/P are all represented by inner diameter * diameter. And GB/T342.1-1982 is also the diameter of the inner diameter d1* line D2. For example, the X ring 25*1.8 means that the inner diameter of the sealing ring is 25 mm, and the section diameter of the apron is 1.8 mm.
Three, Ding Qing high elastic import X ring
We know that the sealing ring is sealed by the principle of force generated by external forces. Rubber elasticity and tensile strength is one of the most important indicators to evaluate seal quality. Taiwan asmall sealed XOK is made of imported rubber and advanced production technology to ensure the high elasticity and excellent tensile strength of the sealing ring. Rubber elasticity is usually expressed by the rebound rate, and sometimes it can be expressed by the elongation and permanent deformation. The elongation of the imported material is large, the permanent deformation is small and the elasticity is large. High elasticity is mainly related to molecular weight, conformational entropy of crimp molecules, crosslinking density of vulcanizate and type of crosslinking bond. The large molecular weight of rubber is beneficial to the improvement of elasticity. Moderate crosslinking can reduce or eliminate the slip between molecular chains, which is conducive to the improvement of elasticity. Moreover, the polysulfide bond is smaller, and the kinetic force of molecular chain is smaller.