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 6240-00-114-5105
NSN 6145-00-834-2676
NSN 5945-00-512-3497
NSN 6150-00-269-8447
NSN 6620-01-067-8336
NSN 5965-01-296-8991
NSN 6645-01-542-3672
NSN 5965-00-079-2360
NSN 6610-01-658-2479
NSN 6320-01-616-0843
NSN 5965-01-147-5289
NSN 5996-01-198-7707