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 4140-00-385-2925
NSN 6620-00-959-6614
NSN 6150-01-524-0228
NSN 5835-00-155-1379
NSN 2925-00-468-5273
NSN 5950-01-441-5682
NSN 6685-01-523-2854
NSN 6685-01-399-8584
NSN 7035-01-422-4642
NSN 5950-01-532-1550
NSN 6320-01-290-5271
NSN 5905-00-155-7018