D27 PTFE Banded Piston with high temperature  for automotives rear shock absorbers

D27 PISTON     
RAW MATERIAL OF SINTER PARTS:IRON BASED, IRON & COPPER BASED, COPPER BASED, STAINLESS STEEL BASED     
RAW MATERIAL OF PTFE DISC:     
PTFE+BRONZE     
PTFE+CARBON     
PTFE+GLASS FIBER     
PTFE+OTHER COMPONENT     
     
     
The detail information of the pistons:     
1.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.low friction coefficient     
2.high chemical properties     
3.good quality and competitive price 
4.high shape stability at high temperature