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 6220-01-047-4060
NSN 6645-00-155-2398
NSN 6110-00-818-2457
NSN 6130-00-264-1861
NSN 5996-01-544-6174
NSN 5965-00-995-6636
NSN 5975-01-128-4380
NSN 5965-00-136-9623
NSN 2925-00-109-4694
NSN 5895-00-127-1893
NSN 6145-00-278-0697
NSN 5895-01-104-5865