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 6610-01-340-0409
NSN 6685-00-898-3167
NSN 6685-01-544-8104
NSN 6220-01-609-1917
NSN 6135-01-490-6173
NSN 5915-00-227-7098
NSN 5945-01-096-1390
NSN 6150-01-423-2545
NSN 4140-00-269-5795
NSN 6685-00-175-0669
NSN 5996-01-063-6556
NSN 5975-01-360-4626