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 5975-01-467-1497
NSN 5935-01-574-4760
NSN 5855-01-602-9653
NSN 6685-00-678-8083
NSN 5999-00-243-9820
NSN 5910-00-982-7445
NSN 5998-00-465-3728
NSN 6645-01-605-4351
NSN 5915-00-170-6775
NSN 5990-01-586-2475
NSN 5960-00-406-9985
NSN 6645-01-194-6594