D27 PTFE tensile strength 18MPa Banded Piston use in front shock absorbers

The detail information of the pistons:        
1.Size:D27, used in front shock absorbers        
"2.When temperature reach 100ºС, expansion ratio ≤+/-1%
"        
"3.Using the testing ring D26.6, with the shock absorber oil, max frictional force is 15N
"        
4.Piston can get through freely of the certain size of cylinder with 2N force        
5.PTFE tensile strength ≥18MPa, breaking tenacity ≥200%         
6.Tight integration between piston and PTFE disc.PTFE won't fall off when working in the cylinder.        
        
        
After processing performance can satisfy the following:        
1)stress cracking test, 150ºС*500 hours        
2)drawing load test:39.2 MPa*10, 000cycles        
3)high vilocity operation, durability test:1, 000, 000 cycles        
4)regular operating durability test:3, 000, 000 cycles        
No band peel off or breakage after test.        
        
        
Advantages:        
1.consistency in size for the same batch pistons        
2.infrared ray detect the diameter        
3.produce the PTFE disc by Xia Yi, can control the quality itself.