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 6240-00-431-4372
NSN 6105-00-307-1369
NSN 5855-00-323-0967
NSN 5945-00-784-0451
NSN 6620-01-552-2889
NSN 6145-01-389-9447
NSN 5996-01-099-1188
NSN 5975-00-257-5616
NSN 5855-01-042-7990
NSN 5998-01-150-5507
NSN 5975-00-140-1825
NSN 6110-01-394-5302