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 5960-00-295-7768
NSN 5990-00-253-0261
NSN 6150-00-369-9116
NSN 6620-01-089-4416
NSN 6645-01-205-3869
NSN 5975-00-486-8518
NSN 6220-01-223-3984
NSN 5855-01-252-5424
NSN 6320-01-611-4918
NSN 6150-01-057-2107
NSN 6105-01-166-8510
NSN 6145-00-220-9933