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 5975-01-274-5344
NSN 5835-01-540-3575
NSN 7035-00-185-8683
NSN 6110-00-538-0109
NSN 5990-01-525-2250
NSN 5945-01-367-6469
NSN 5985-01-476-6872
NSN 6130-01-462-5927
NSN 4140-01-200-8651
NSN 5935-01-102-6059
NSN 6685-01-317-4839
NSN 5950-01-333-8179