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 5990-01-320-1412
NSN 5920-01-602-3092
NSN 7035-00-946-2642
NSN 5975-00-636-4910
NSN 6150-00-410-1232
NSN 6220-00-229-2039
NSN 5910-01-514-7309
NSN 6150-01-478-3952
NSN 5920-01-117-6258
NSN 7035-01-640-7495
NSN 5835-01-295-9220
NSN 5920-00-356-2103