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 5920-01-415-2178
NSN 6150-01-310-9376
NSN 5910-01-051-2282
NSN 5975-00-618-0161
NSN 5950-00-932-3232
NSN 7035-01-018-9629
NSN 6645-01-454-7038
NSN 6110-00-891-9917
NSN 5930-01-176-3614
NSN 6320-01-029-4220
NSN 4140-01-058-6603
NSN 5905-01-591-1605