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 5915-01-008-5317
NSN 5895-00-901-2186
NSN 5998-01-191-1404
NSN 5835-01-101-8382
NSN 6240-01-345-0526
NSN 5905-01-470-1293
NSN 6650-01-428-9958
NSN 6130-00-431-6794
NSN 6650-01-499-5673
NSN 5895-01-435-4212
NSN 6240-01-486-3715
NSN 6320-00-456-2092