1127 built-in Kevlar PTFE packing
Each PTFE graphite yarn is covered with aramid fiber in its center

MK4080 is braided with 4080Y. It’s flexible and stable, has low friction coefficient and excellent compression resistance. Applicable for all chemical compounds except alkali metal and gaseous fluorine ,reciprocating pumps, rotary pump, piston, stem, expansion joint at high leaner speed.

Compressed asbestos sheet are generally cheap, convenient. But the biggest trouble is the charring of rubber and packing, and the low temperature will result in the loosen of material. and finally cause leakage in the joint part or in the shim itself, and agglo-merating, smoking, and the planking are more easy sticking on the flange. Beside, asbestos will cause heavy pollution. So the high-strengh graphite sheet and non-compressed asbestos sheet will be used instead of asbestos materials.