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 6650-01-538-6276
NSN 6685-00-342-9408
NSN 5855-01-211-2437
NSN 4140-01-632-1428
NSN 5910-00-860-3083
NSN 5996-01-325-7897
NSN 6240-01-542-8886
NSN 6135-00-932-3136
NSN 7035-00-048-3723
NSN 5855-00-631-4565
NSN 6110-00-071-2783
NSN 5990-01-227-6526