MIL-STD-293, DEPARTMENT OF DEFENSE TEST METHOD: VISUAL INSPECTION GUIDE FOR CELLULAR RUBBER ITEMS (18 OCT 1956)

MIL-STD-293, DEPARTMENT OF DEFENSE TEST METHOD: VISUAL INSPECTION GUIDE FOR CELLULAR RUBBER ITEMS (18 OCT 1956)., This document covers only visual defects for "sponge" rubber items. These include chemically blown or expanded rubber items having either open and interconnecting cells or closed and non-interconnecting cells. Also included are cellular products made from chemically or mechanically foamed latices or liquid elastomers.