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 6150-01-408-7679
NSN 5960-01-410-8177
NSN 5975-01-282-4416
NSN 6150-01-549-8888
NSN 6135-00-240-3200
NSN 6150-00-847-6692
NSN 6220-00-141-6150
NSN 6685-01-199-9109
NSN 6105-00-286-0694
NSN 5905-00-509-8821
NSN 6145-01-338-4334
NSN 5975-00-794-6811