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 6645-01-571-8578
NSN 6240-01-604-1293
NSN 6110-01-137-1921
NSN 6610-01-367-5110
NSN 6685-01-548-7787
NSN 5910-00-255-6228
NSN 6685-00-932-8990
NSN 5990-00-513-5328
NSN 5895-00-008-2334
NSN 4140-01-260-1909
NSN 6240-01-208-0401
NSN 5920-00-669-8538