[Rubber Oil Seal Material] Modification Technology And Shortcomings Of PTFE

[Rubber oil seal material] Modification technology and shortcomings of PTFE

In fact, no matter what kind of rubber oil seal has its advantages and disadvantages, DSH oil seal tells you what are the modification technology and disadvantages of PTFE for rubber oil seal oil seal?

Although PTFE material has advantages, as an oil seal material, it generally has the following disadvantages:

(1) The mechanical properties are poor, the mechanical strength is only 14-25Mpa, there is no resilience, the hardness is low, and the elongation at break is large;

(2) Poor wear resistance and large wear.

(3) and poor creep, easy to cold flow.

(4) Difficulty in forming and secondary processing。

(5) Poor thermal conductivity, easy to cause thermal expansion ，thermal fatigue and thermal deformation, etc.

*In order to make up for its own defects, the PTFE oil seal must be modified, especially the elasticity and flexibility that directly affect the sealing performance of the oil seal, which is the problem of filling the PTFE oil seal.

*The methods of modification are: Inorganic filling modification. Metal filled modification. Organic filling modification, etc.