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 5950-01-434-7937
NSN 5996-01-185-5411
NSN 6135-00-461-3590
NSN 6685-01-076-4703
NSN 6150-01-019-5734
NSN 6145-01-310-1649
NSN 5998-01-504-1120
NSN 5935-01-399-0618
NSN 5996-00-470-7762
NSN 5998-00-863-0202
NSN 5930-01-429-9749
NSN 6650-01-196-4667