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 5925-01-424-6744
NSN 2925-00-524-4688
NSN 6620-00-064-4964
NSN 6105-01-355-0061
NSN 6645-01-615-4448
NSN 2925-00-465-6354
NSN 5895-01-235-2371
NSN 5945-01-408-5977
NSN 5910-00-226-4187
NSN 5950-01-512-7299
NSN 6110-00-736-0367
NSN 5895-00-196-1444