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 5855-01-110-9564
NSN 6240-00-997-4559
NSN 5905-01-434-4779
NSN 5910-00-679-2638
NSN 5920-00-565-8231
NSN 6650-00-953-9511
NSN 5945-01-622-8981
NSN 5990-01-533-1347
NSN 4140-00-161-2586
NSN 6220-00-186-8565
NSN 6130-01-512-1069
NSN 5925-00-100-0102