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 6645-00-435-5610
NSN 5950-00-580-2156
NSN 6110-01-288-3983
NSN 6650-01-495-0995
NSN 6650-01-180-2171
NSN 5925-00-536-7651
NSN 7035-01-399-5354
NSN 6220-01-224-6415
NSN 6620-01-307-9874
NSN 5990-00-788-3829
NSN 5975-01-433-3938
NSN 6105-01-155-6962