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 5960-01-223-8357
NSN 5905-00-356-7976
NSN 4140-00-696-4556
NSN 5965-01-556-2048
NSN 6650-01-485-3444
NSN 6645-01-546-3212
NSN 6105-01-470-0054
NSN 6220-00-400-8807
NSN 6320-01-524-9488
NSN 5965-00-296-9994
NSN 5925-01-182-4747
NSN 5998-01-423-0685