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 5905-00-434-9680
NSN 5975-01-215-3473
NSN 5996-01-476-7550
NSN 6105-01-391-7500
NSN 5835-01-631-7390
NSN 5996-01-649-1277
NSN 6620-01-633-8443
NSN 2925-01-317-4543
NSN 5930-01-110-5350
NSN 6650-01-137-1685
NSN 6130-01-528-0113
NSN 5835-00-279-2887