Braided from continuous Acrylic blended fiber, Style P-311 is impregnated with PTFE and a proprietary inert lubricant. Style P-311 packing is also a non-staining and non-contaminating packing with excellent heat dissipation properties. A durable and resilient packing for general service applications such as centrifugal, rotary, and reciprocating pumps, as well as valve service. Our proprietary lubricant is used for extremely low friction at startup and during operation.