A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5965-01-249-6349
NSN 5855-01-075-1292
NSN 5855-01-042-7990
NSN 2925-01-411-0896
NSN 6240-00-107-1518
NSN 5960-01-050-3237
NSN 5998-01-408-9395
NSN 6685-00-038-7886
NSN 5999-00-765-3035
NSN 6135-00-432-8779
NSN 5935-00-100-6038
NSN 6610-01-531-6980