Lead based One Pack Stabilizer is a combination of Metallic Salts, additives for the processing of PVC. A number of different additives like oxidizers, lubricants, impact modifiers, process aids, calcium stearate, and Lead stabilizers. etc are put together to form One Pack Heat Stabilizer Flake or Powder compound.  One Pack Lead Stabilizers improves the heat stability of PVC during extrusion and also provide high output rates at lower costs. They find value in both single screw & in multi screw extrusion of pipe.