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 5910-01-031-3213
NSN 6130-01-476-8732
NSN 6220-01-047-7325
NSN 6110-01-526-2487
NSN 6685-01-270-1062
NSN 5935-01-124-9679
NSN 5930-01-213-7876
NSN 5925-00-332-9957
NSN 6685-00-642-0533
NSN 5990-01-507-7495
NSN 7035-01-227-2546
NSN 4140-00-246-4969