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 5915-01-505-7648
NSN 5915-00-676-2056
NSN 6650-00-027-1348
NSN 6130-01-137-1936
NSN 5920-01-449-1236
NSN 6650-01-515-7248
NSN 6685-01-321-7931
NSN 5895-01-409-2949
NSN 5999-01-166-5377
NSN 6145-00-933-0556
NSN 5930-00-540-0900
NSN 5920-00-109-2062