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 4140-00-464-7890
NSN 6220-00-586-6645
NSN 5999-01-271-6650
NSN 5920-01-631-1017
NSN 5950-00-367-2705
NSN 5999-01-463-7443
NSN 5895-01-224-7913
NSN 5910-01-188-8442
NSN 6145-01-613-6800
NSN 6685-00-551-3842
NSN 6135-01-413-4747
NSN 6220-01-277-8297