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 5915-00-008-7148
NSN 5990-01-314-8591
NSN 4140-01-468-8102
NSN 6145-01-510-1152
NSN 7035-01-246-9936
NSN 6685-01-049-2046
NSN 6320-00-823-2015
NSN 5920-00-798-8861
NSN 6220-01-223-3984
NSN 5985-01-390-4030
NSN 6610-01-359-9962
NSN 6610-00-194-0676