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 6150-00-198-7395
NSN 6645-01-188-5237
NSN 5920-01-359-1197
NSN 6135-01-606-0596
NSN 7035-00-981-7216
NSN 6685-00-802-6371
NSN 5920-00-985-4480
NSN 5990-00-607-0116
NSN 6135-00-161-0746
NSN 5920-01-254-2267
NSN 5895-00-938-3541
NSN 6240-01-444-2227