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 6610-01-182-1182
NSN 5960-01-649-1341
NSN 6650-01-159-4251
NSN 5935-00-829-0283
NSN 5990-00-070-9608
NSN 6645-01-051-1453
NSN 5895-01-454-6980
NSN 5950-00-645-2864
NSN 5835-00-280-8494
NSN 5945-01-067-7955
NSN 6650-00-296-4670
NSN 5975-01-359-4848