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 5960-00-615-9972
NSN 6220-01-337-1053
NSN 5910-00-444-6766
NSN 6240-00-275-1950
NSN 5990-00-140-1159
NSN 5915-01-633-5058
NSN 5996-01-277-8977
NSN 5945-01-583-1514
NSN 5999-00-703-2008
NSN 5835-01-528-7454
NSN 5975-01-454-2588
NSN 6620-01-453-9971