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 2925-01-276-6100
NSN 5998-00-557-7780
NSN 6685-01-158-4129
NSN 5920-01-300-3646
NSN 6320-01-085-8845
NSN 2925-00-831-7024
NSN 6240-00-551-3144
NSN 5998-00-453-8906
NSN 6150-00-683-5349
NSN 5996-01-429-0390
NSN 6110-01-235-0882
NSN 2925-01-263-3638