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 5998-01-607-0972
NSN 2925-01-622-8568
NSN 5990-00-989-2482
NSN 5895-01-519-9373
NSN 6150-01-643-5604
NSN 5998-01-277-4061
NSN 6105-01-430-8663
NSN 6650-01-416-0473
NSN 6620-00-572-8787
NSN 6610-00-304-5077
NSN 6610-01-462-5980
NSN 5975-01-362-9338