The 031350 packing set is manufactured from premium elastomers with a stainless steel or brass anti-extrusion ring. Its lip-seal geometry is engineered to reduce rotational friction while maintaining a seal against abrasive fluids. Designed for flowback and stimulation industries, it remains resilient under vibration and variable temperatures. The low-friction design prevents fluid bypass and minimizes wear on swivel joint races. It is fully compatible with standard 3-inch assemblies for easy field maintenance.