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 6320-00-036-3688
NSN 4140-01-048-0484
NSN 6220-01-453-3606
NSN 6620-00-646-9474
NSN 6685-00-296-0392
NSN 6685-01-576-9204
NSN 6240-00-828-6228
NSN 5915-01-303-5453
NSN 7035-01-535-1450
NSN 5935-01-564-4463
NSN 6150-00-240-4411
NSN 5835-00-711-3371