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 6240-00-456-2578
NSN 6620-01-649-6050
NSN 6220-00-895-7218
NSN 5835-01-328-6626
NSN 6645-01-370-5264
NSN 5950-01-448-9779
NSN 5835-01-357-9235
NSN 7035-00-931-9415
NSN 5930-01-575-4235
NSN 4140-01-388-1304
NSN 5998-01-013-9293
NSN 5960-01-136-5737