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 6620-01-319-9804
NSN 6240-01-044-7384
NSN 5996-00-213-7121
NSN 5999-01-079-8010
NSN 5985-01-372-3069
NSN 5905-00-529-0508
NSN 5930-01-046-6550
NSN 5835-00-804-0569
NSN 6130-00-704-6589
NSN 5920-01-086-7219
NSN 5985-00-480-1712
NSN 6240-01-541-7009