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 6610-01-269-3070
NSN 6240-01-061-7359
NSN 5835-00-794-7500
NSN 7035-00-521-6423
NSN 5930-00-428-1687
NSN 5996-00-615-6083
NSN 5950-01-358-4316
NSN 5935-00-771-6895
NSN 4140-01-250-7159
NSN 6150-01-540-6627
NSN 5905-00-339-8780
NSN 5920-01-201-7346