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 5905-01-435-4531
NSN 4140-01-622-4375
NSN 5975-01-423-0447
NSN 5945-01-046-6319
NSN 5895-01-290-3887
NSN 6145-00-470-1606
NSN 5835-00-933-9609
NSN 7035-01-202-8172
NSN 5930-00-017-8284
NSN 6150-00-288-6245
NSN 5965-01-280-0961
NSN 5998-00-719-7610