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 6135-01-462-6040
NSN 6650-01-423-1348
NSN 5990-00-320-2779
NSN 5999-01-538-0895
NSN 5975-00-714-8031
NSN 6610-01-278-9387
NSN 6105-00-665-8581
NSN 5895-00-395-9539
NSN 6645-00-108-6479
NSN 4140-01-618-9198
NSN 5950-01-598-5786
NSN 5910-01-237-0066