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 5999-01-163-4139
NSN 6145-01-163-5219
NSN 6110-01-381-0469
NSN 6645-01-650-1860
NSN 6145-00-614-9302
NSN 6320-00-500-1545
NSN 6130-00-801-5359
NSN 5999-01-546-9114
NSN 6320-01-573-6490
NSN 5855-00-491-7079
NSN 6240-00-776-1614
NSN 5960-01-514-5433