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 6135-01-290-6487
NSN 6620-01-361-8685
NSN 5999-01-044-8325
NSN 5960-01-589-6846
NSN 5975-01-602-5441
NSN 5998-01-329-5851
NSN 5910-01-186-9300
NSN 5960-01-344-2604
NSN 5905-01-233-9266
NSN 7035-01-514-2221
NSN 2925-00-155-2100
NSN 5945-00-534-3599