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 5930-00-855-0346
NSN 5999-01-018-4942
NSN 5960-00-188-8648
NSN 6320-00-270-8222
NSN 5910-00-197-8920
NSN 5975-00-132-9497
NSN 5910-00-008-8419
NSN 6610-01-245-8015
NSN 5960-01-193-5224
NSN 5935-01-334-9771
NSN 6620-01-152-9050
NSN 5895-01-159-9840