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 2925-01-079-6229
NSN 5999-01-422-2065
NSN 5960-00-584-4553
NSN 5930-01-137-3997
NSN 6685-01-107-4571
NSN 5925-01-515-5785
NSN 5935-01-045-6648
NSN 6105-01-401-5361
NSN 5975-00-009-2725
NSN 6150-00-644-0029
NSN 6145-00-099-8986
NSN 5960-01-300-3181