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 5905-00-420-4251
NSN 5835-01-384-3206
NSN 6645-01-063-8243
NSN 6685-01-106-2715
NSN 5905-01-094-2107
NSN 5998-00-609-4368
NSN 5835-01-123-8305
NSN 5975-01-334-3671
NSN 5835-01-301-0022
NSN 6150-00-302-9074
NSN 5985-01-370-4276
NSN 6135-01-344-2442