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 7035-00-437-7950
NSN 5935-00-984-2514
NSN 5905-00-233-1464
NSN 4140-01-260-4156
NSN 5999-00-688-7805
NSN 5990-01-414-7618
NSN 6110-01-147-0656
NSN 6650-00-629-8027
NSN 6240-01-123-9040
NSN 6110-01-152-1097
NSN 6685-01-450-8960
NSN 6105-01-469-6027