A high-tech non-asbestos composite fiber impregnated with virgin PTFE in-suspension and internally saturated with a proprietary lubricant. Substantially less abrasive than asbestos, yet still able to withstand temperatures up to 500º F (200º C). Excellent watertight sealing ability with less required leakage at rest to compensate for frictional heat expansion when under way.

Ideal replacement for standard flax packing material in shaft stuffing box and rudder box applications.