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 6685-01-407-1171
NSN 5855-00-079-2370
NSN 6650-01-003-4144
NSN 6645-01-244-4881
NSN 6645-01-231-2432
NSN 5990-01-529-7307
NSN 6685-00-466-0723
NSN 5935-00-135-5594
NSN 5950-01-577-7567
NSN 5975-01-388-8379
NSN 2925-01-554-5246
NSN 6645-01-525-7493