... flame retardant 4.shrink ratio:2:1,3:1 Cross-linked Polyolefin Tube1.Halogen Free2.Environment Friendly3.flexible,flame retardant4 ... tube,using specially designed formulation of high polymers,through cross-link by electronic accelerator and continuous expansion.The ... or small parts from minor abrasion, and to create cable entry seals, offering environmental sealing protection between bulkheads and ...