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 5975-00-806-2113
NSN 5935-00-001-3152
NSN 6220-00-840-9528
NSN 6320-00-937-5625
NSN 6135-01-507-4346
NSN 5855-01-361-1362
NSN 5960-01-364-1318
NSN 5920-00-613-3116
NSN 2925-01-464-3093
NSN 5905-01-488-9514
NSN 6150-01-146-3462
NSN 5910-00-061-9560