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 6620-00-678-1935
NSN 6620-00-224-8261
NSN 5915-01-580-0308
NSN 5920-01-264-8238
NSN 5915-00-797-8750
NSN 5910-01-564-1714
NSN 5990-01-633-9503
NSN 6685-01-240-2174
NSN 5915-01-375-9855
NSN 5945-01-239-6533
NSN 6610-01-448-2590
NSN 5895-01-020-7771