V90 is supplied as a double construction of a 100% unscintered PTFE cone with a spiral covering of PTFE tape. V90 provides the versatility of an extruded malleable core with the additional strength and extrusion resistance of the PTFE tape covering. The result is a low friction, extrusion resistant, TEFLON packing with near universal chemical resistance. V90 will not harden nor shrink in application and provides an instant packing and instant gasket on one very economical spool. In valves, wrap V90 round the stem to fill the gland (no need for cut rings), tighten the gland follower and the PTFE moulds to form a tight leak free seal. V90 is guaranteed to last the life of the valve to which it is fitted. On flanges, a single strand of V90, crossed-over at the ends, will bolt down to form a continuous gasket that will not weld itself to the flange surfaces.