Knowledge of rubber sealing materials is popularized

Knowledge of rubber sealing materials is popularized

1. What is the difference between fluorine rubber and nitrile material?

A: Fluorine rubber and nitrile rubber are commonly used materials in rubber seals. Because nitrile has good compatibility with petroleum-based hydraulic oil, it has good stability as a sealing material and is cheap in price, so it is widely used in hydraulic and pneumatic seals. Fluorine rubber is a sealing rubber with comprehensive properties in synthetic rubber at present. The primary bond of the carbon atom of fluorine rubber is replaced by fluorine atom, and the molecular structure is stable. It has good heat resistance and chemical stability. Therefore, it is used more in high temperature occasions and special medium occasions.

2. What is the elongation of rubber material?

A: Elongation is the reciprocal index of material rigidity, expressed as a percentage of the length ratio of the material in its natural state. The allowable elongation of the material is the maximum elongation before the occurrence of sexual damage or deformation.

3. What rubber material breathability?

A: refers to the gas on the material through the performance, in the pneumatic seal and vacuum seal should pay attention to this performance of the material.

4. What is the difference between sealing material FPM and FKM?

A :FPM is the abbreviation of the fluoroprene in ISO 1629, and FKM is the abbreviation of the fluoroprene in ASTM 1418. FPM and FKM both refer to the same fluoro rubber, and the spelling is different because European English and American English are different.

5. What are the types of materials for braiding fillers?

A: There are many kinds of weaving materials, which are divided into natural fibers, mineral fibers, synthetic fibers, ceramics and metal fibers.

6. What kind of material is often referred to as self-healing?

A: Flexible graphite.