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 6645-01-259-7142
NSN 5905-01-449-1291
NSN 6150-00-169-8558
NSN 6220-01-362-1607
NSN 6240-01-496-3190
NSN 6645-01-505-1691
NSN 5895-01-132-6373
NSN 5945-01-632-7564
NSN 4140-01-195-0816
NSN 5965-01-188-4507
NSN 6220-01-563-0330
NSN 5975-00-005-7877