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 5915-01-140-0680
NSN 5910-01-357-2303
NSN 5905-01-431-2474
NSN 6645-01-179-0243
NSN 5835-00-909-8088
NSN 5905-00-295-4378
NSN 5998-01-516-7280
NSN 5990-00-470-2535
NSN 6610-01-530-5623
NSN 6650-00-171-4175
NSN 6150-00-514-3040
NSN 6150-01-508-7416