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 6650-00-470-8594
NSN 5925-00-972-9984
NSN 6620-00-115-3492
NSN 6150-00-891-7922
NSN 6150-00-850-6471
NSN 6240-01-250-3574
NSN 6145-01-451-9088
NSN 6685-01-606-5739
NSN 5835-01-200-7153
NSN 5835-00-461-9984
NSN 4140-00-311-6329
NSN 5945-00-257-4073