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 6150-01-012-1409
NSN 6150-01-436-7984
NSN 5998-00-959-8382
NSN 5920-00-614-9281
NSN 5999-01-332-0553
NSN 5996-00-383-6173
NSN 5835-00-059-5854
NSN 5975-01-511-1234
NSN 6240-01-147-0379
NSN 5925-00-812-1987
NSN 6135-01-426-8282
NSN 2925-00-640-8611