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 5895-01-497-0361
NSN 6610-01-633-8931
NSN 5975-00-278-7437
NSN 6645-01-517-8189
NSN 5950-00-558-4780
NSN 6130-01-391-6831
NSN 4140-01-463-6377
NSN 5915-01-575-1745
NSN 6685-01-584-5861
NSN 5915-01-294-6584
NSN 4140-01-057-9258
NSN 6685-00-523-9415