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 5925-01-316-6691
NSN 5935-00-176-2581
NSN 6145-01-521-3924
NSN 5975-01-014-2798
NSN 7035-01-255-2332
NSN 6320-01-255-2096
NSN 6685-01-381-0759
NSN 5945-01-243-6925
NSN 5950-01-176-8252
NSN 5999-01-534-4123
NSN 5985-00-848-1325
NSN 5835-00-513-9680