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 5950-00-392-1719
NSN 6645-00-615-8246
NSN 6105-01-407-1329
NSN 7035-01-169-6551
NSN 5945-00-992-7949
NSN 5930-00-878-9372
NSN 4140-01-166-0028
NSN 6130-00-972-9113
NSN 5990-00-806-3556
NSN 6220-01-030-2697
NSN 5905-01-381-6386
NSN 5915-01-274-8637