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 2925-00-408-9829
NSN 5950-01-332-1124
NSN 6110-01-007-6111
NSN 5945-01-634-0588
NSN 5960-01-528-1147
NSN 5996-01-575-5349
NSN 6135-01-392-6166
NSN 5895-01-584-6215
NSN 6130-00-081-2186
NSN 6135-01-334-3935
NSN 5996-01-610-6641
NSN 6685-01-517-2753