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 6645-01-160-4256
NSN 2925-00-064-9887
NSN 6150-01-371-1627
NSN 5910-00-422-5333
NSN 6650-00-617-7573
NSN 6110-01-367-8226
NSN 5835-00-888-9422
NSN 5895-01-447-2535
NSN 6320-01-108-5933
NSN 6610-01-167-8747
NSN 5960-00-791-1601
NSN 6110-00-063-6882