40# shock absorber piston benz oil cylinder piston with density 6.5g/cm³,band PTFE disc on OD

Xia Yi company was found in 2006,after several years effort,we have achieved great success in the 

enterprise.We increased our workshop this year and developed several new automatic machines which 

highly improve our work efficiency.We have a technic team to develop automatic machine and we 

improve our pressing machine and other machinesto lower the cost and improve efficiency.

The detail information of the pistons:

1.Size:D40,used in benz shock absorbers

2.Material:TEFLON PTFE 6507A NC010(Dupont)

3.When temperature reach 100℃,expansion ratio ≤+/-1%

4.Using the testing ring,with the shock absorber oil,max frictional force is 15N

5.Piston can get through freely of the certain size of cylinder with 2N force

6.PTFE tensile strength ≥18MPa,breaking tenacity ≥200%

7.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,150℃*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.