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 5930-01-515-9924
NSN 4140-01-411-1159
NSN 6620-01-386-5543
NSN 7035-01-655-8893
NSN 5920-01-014-7773
NSN 6320-01-335-8336
NSN 5835-00-341-5441
NSN 6220-01-651-6506
NSN 6645-01-090-2555
NSN 4140-00-008-4912
NSN 5960-01-502-6270
NSN 6610-01-339-1595