round type bellow cover

1 The extemal of this product is made of Nylon material without any air pores.
2 It is anti-dust,anti-water,anti-oil/emulsion and anti-chemicals.
3 The nylon leather is used  for the exterior and PVC plate and steel supporting ring for the in terior.It can work properly within a temperature range of 110°c and -40°c.
4 Diameter and length can be decided by end users.This product is to be used in a range of 120m per minute.
round type bellow cover