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 5985-01-278-1817
NSN 5990-01-136-4068
NSN 5975-01-253-6881
NSN 5910-00-760-1886
NSN 6110-01-533-1843
NSN 6150-01-399-0375
NSN 5999-00-254-5759
NSN 6135-01-625-0765
NSN 5925-01-050-4265
NSN 6135-01-643-3114
NSN 5935-01-481-9707
NSN 6610-01-310-3313