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 5996-01-386-4230
NSN 5915-01-515-0156
NSN 7035-01-655-8893
NSN 6130-01-468-3236
NSN 6135-01-193-8154
NSN 6685-00-810-7232
NSN 6240-01-467-9719
NSN 6320-00-925-0558
NSN 6110-00-916-2559
NSN 5920-00-019-9044
NSN 5895-00-560-7921
NSN 5998-01-602-9069