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 6320-01-573-6490
NSN 6150-01-561-4287
NSN 5910-01-182-6607
NSN 5920-01-437-6543
NSN 6645-01-389-1643
NSN 5999-00-078-5970
NSN 5835-01-048-8106
NSN 6320-01-436-9228
NSN 6105-00-418-2222
NSN 2925-00-233-5644
NSN 6105-01-449-2375
NSN 6645-01-613-2053