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 5960-00-059-7010
NSN 5985-00-633-5898
NSN 5920-01-323-6369
NSN 5855-00-869-3635
NSN 6145-01-144-9949
NSN 5855-00-757-5149
NSN 6105-00-222-4762
NSN 6145-00-141-8095
NSN 6145-01-112-4677
NSN 6320-01-425-1417
NSN 5990-01-565-2226
NSN 7035-01-067-4185