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 6645-01-422-1374
NSN 5930-00-486-7507
NSN 6320-01-233-5798
NSN 6110-01-104-4777
NSN 5999-01-462-1792
NSN 5998-01-015-0569
NSN 6145-01-411-9054
NSN 6650-00-255-2633
NSN 5935-01-432-9840
NSN 6240-01-600-1092
NSN 5910-01-207-8904
NSN 6130-01-481-7433