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 5910-01-302-8731
NSN 6320-00-391-5111
NSN 6105-00-257-2505
NSN 6130-00-176-1664
NSN 5895-00-097-1267
NSN 5975-00-164-7661
NSN 5835-01-535-8470
NSN 5945-01-501-5487
NSN 5950-00-923-0849
NSN 6650-01-097-6814
NSN 5925-00-027-8220
NSN 6320-01-630-7629