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 6650-00-279-5741
NSN 5998-00-451-9934
NSN 6320-01-470-6826
NSN 5960-01-632-6576
NSN 5985-01-483-6108
NSN 6240-01-346-5550
NSN 5950-01-425-1884
NSN 5910-00-774-8137
NSN 6320-01-411-7469
NSN 5990-01-284-3187
NSN 6150-00-071-1180
NSN 5925-01-362-3425