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 5996-00-833-2521
NSN 5905-01-311-7319
NSN 4140-01-188-8160
NSN 2925-01-411-4666
NSN 2925-01-350-8372
NSN 6240-00-907-3371
NSN 5935-01-532-9245
NSN 5985-01-530-6779
NSN 5910-01-148-2353
NSN 6320-01-630-7629
NSN 5965-01-142-8044
NSN 6650-00-809-1817