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 6220-01-202-8907
NSN 7035-01-399-5354
NSN 5999-01-053-3442
NSN 5905-01-502-7028
NSN 5996-01-309-3602
NSN 5960-01-487-6436
NSN 6620-00-189-0967
NSN 6685-00-347-7409
NSN 6145-01-509-1851
NSN 6610-00-256-8006
NSN 6320-01-118-6662
NSN 4140-01-473-5747