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 5950-01-424-4101
NSN 5945-01-494-4297
NSN 5905-01-310-1292
NSN 5985-01-416-9441
NSN 6220-01-245-4278
NSN 6645-01-356-3105
NSN 5998-01-119-4736
NSN 6110-00-780-7152
NSN 5910-00-119-4498
NSN 5835-01-228-8666
NSN 6150-00-764-1943
NSN 4140-01-614-7485