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 4140-00-648-3303
NSN 6150-00-468-5416
NSN 7035-00-476-7178
NSN 7035-01-038-3165
NSN 6105-00-539-0393
NSN 5999-01-429-7561
NSN 5975-01-246-3874
NSN 5950-00-501-9448
NSN 5999-01-627-1123
NSN 5855-00-288-1408
NSN 6220-01-599-6880
NSN 5985-01-244-5360