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 6650-01-646-9740
NSN 6145-00-181-9758
NSN 6610-01-256-6337
NSN 5835-00-850-1475
NSN 4140-01-371-1565
NSN 6220-01-156-9306
NSN 5999-01-344-5572
NSN 6110-01-321-3164
NSN 5895-00-073-9422
NSN 5975-01-263-2167
NSN 6110-01-148-6266
NSN 5950-01-353-9159