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 5910-01-654-6330
NSN 5975-01-329-9325
NSN 6645-01-032-5337
NSN 6145-01-617-0355
NSN 5975-00-677-8908
NSN 5950-01-599-1976
NSN 5960-00-452-0452
NSN 6130-01-253-5029
NSN 5925-01-428-9978
NSN 6645-01-179-0243
NSN 5925-00-724-9811
NSN 5965-01-236-6826