Packing

Name:
Packing
Detailed information:
(1) A collar or gasket used to seal mechanical devices to prevent leakage of oil or water; often made of specially compounded rubber or a flexible plastic. (2) The operation of placing solid materials or objects in shipping containers in such a way as to secure maximum space economy and freedom from damage by vibration or impact. Barriers of paperboard, foamed plastic, or glass fiber are widely used. (3) An inert material used in distillation columns to baffle the downward flow of countercurrent liquid; it may be glass fiber or beads, metal tubes called Raschig rings, metal chains, or specially shaped devices of various kinds (saddles, helices, rings, etc.).See Tower, Distillation.