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 5990-01-242-9653
NSN 5998-01-642-9102
NSN 5999-01-206-9300
NSN 5915-01-041-1373
NSN 5915-00-552-1779
NSN 4140-01-605-1414
NSN 5998-00-110-7247
NSN 5950-01-163-3063
NSN 5925-01-640-7146
NSN 6105-01-555-4426
NSN 5910-01-453-0419
NSN 5965-00-138-9434