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 6110-01-201-5539
NSN 6645-01-590-6385
NSN 5998-01-161-9200
NSN 5915-01-303-6641
NSN 6645-01-622-1830
NSN 5925-00-260-4298
NSN 5975-01-530-0599
NSN 6130-00-829-7551
NSN 6650-00-453-5616
NSN 5910-00-011-8821
NSN 5945-01-352-0663
NSN 6320-00-925-0558