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 6650-01-339-7571
NSN 6620-00-193-9503
NSN 5920-00-929-8095
NSN 6110-00-205-1778
NSN 6240-01-263-5343
NSN 5935-00-857-4963
NSN 6105-01-231-9823
NSN 5895-01-089-8171
NSN 5915-01-051-6068
NSN 5950-01-411-1880
NSN 5985-00-057-3497
NSN 6145-00-834-1304