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 5920-00-189-0858
NSN 5990-00-518-0684
NSN 7035-00-517-8232
NSN 6685-01-171-9768
NSN 6150-01-411-1402
NSN 6145-01-602-9331
NSN 6145-00-840-6685
NSN 5925-01-446-4974
NSN 6110-00-790-5533
NSN 6150-00-955-9418
NSN 5920-01-598-9690
NSN 6620-01-423-7300