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 4140-00-902-7744
NSN 6145-01-509-4057
NSN 5985-01-426-3472
NSN 6150-00-123-7390
NSN 5945-01-032-3575
NSN 6105-01-306-9199
NSN 5950-01-459-8979
NSN 5975-01-486-4351
NSN 7035-01-146-7096
NSN 5999-00-113-2954
NSN 5996-01-651-0056
NSN 6145-01-423-6628