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 6645-00-787-8813
NSN 6150-01-030-6184
NSN 6610-01-510-8687
NSN 5945-01-370-9275
NSN 2925-00-455-2367
NSN 6645-00-117-9839
NSN 6645-01-555-4356
NSN 6685-01-301-1270
NSN 6130-01-181-7240
NSN 6150-01-399-6207
NSN 5855-01-524-2040
NSN 6240-01-533-1453