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 5996-00-389-7404
NSN 6645-01-607-2132
NSN 6130-01-171-9773
NSN 4140-01-359-1665
NSN 5925-01-510-4579
NSN 6220-00-141-6150
NSN 4140-01-261-5725
NSN 5975-01-036-3136
NSN 5905-00-523-0191
NSN 5930-01-141-7740
NSN 5895-01-398-9088
NSN 6130-01-383-0416