Stuffing Box

STUFFING BOX 1. Introduction of stuffing box The stuffing box is installed on the wellhead to seal polished rod to prevent crude oil spill well. 2. Material 2.1 Chemical Composition The chemical composition of stuffing box shall be any composition of AISI recommended series materials listed below which meet the mechanial property requirements. The chemical composition and limits shall be detailed in the material specification of the manufacturer. A) ASTM A395 ductile iron, or