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 5960-01-648-1872
NSN 5945-00-226-8560
NSN 6320-01-354-6204
NSN 5915-01-389-4081
NSN 5935-00-861-1738
NSN 6650-01-332-3799
NSN 6610-01-646-1609
NSN 6105-00-185-1579
NSN 6145-01-264-3318
NSN 7035-00-931-9415
NSN 6105-01-090-0661
NSN 6685-01-644-4419