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 6105-00-112-9099
NSN 6240-01-533-3770
NSN 5855-01-191-3404
NSN 5996-00-255-4097
NSN 6150-00-353-7392
NSN 5975-01-050-9018
NSN 5895-01-048-6433
NSN 6150-01-490-2924
NSN 5910-01-073-0961
NSN 5985-01-594-2314
NSN 4140-01-535-3479
NSN 5930-00-929-5031