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 2925-01-154-2949
NSN 5915-01-295-3282
NSN 5910-01-068-2218
NSN 5915-00-643-8484
NSN 6105-01-492-5723
NSN 5895-00-910-5447
NSN 5910-01-215-4080
NSN 6220-01-213-3885
NSN 6105-01-508-3471
NSN 5999-00-554-9966
NSN 6145-00-583-9989
NSN 5950-01-153-0668