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 6685-01-173-3994
NSN 5960-01-023-3615
NSN 6650-01-039-9340
NSN 6130-01-519-9337
NSN 6650-01-261-5239
NSN 5975-01-097-4705
NSN 5945-01-110-5371
NSN 7035-00-360-2008
NSN 5965-00-481-9737
NSN 5985-01-517-9518
NSN 6685-00-135-6791
NSN 5935-00-357-3704