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 6650-01-577-4447
NSN 2925-01-480-8273
NSN 6685-00-308-9431
NSN 5910-01-337-0977
NSN 5925-01-164-5148
NSN 5855-01-203-4719
NSN 6620-01-661-0455
NSN 5965-01-447-6485
NSN 5920-00-632-1308
NSN 2925-00-288-1394
NSN 5915-01-463-7373
NSN 6145-00-730-3933