... -viscous 3.Self-lubricating 4. Atmospheric aging resistance Item:ETFE Balls,Rings & gasketsMaterial: ETFE Color: white, black, natural, beigeSize: according to ... .PTFE was widely used as a resistant high&low temperature material, corrosion-resistant materials, insulation materials in the atomic energy, ... smelting industry, and become irreplaceable products. high temperature resistance ETFE sleeve