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 6130-00-452-1486
NSN 5950-00-469-3948
NSN 5905-01-040-0406
NSN 4140-00-580-8508
NSN 5935-01-485-0179
NSN 5950-00-823-0019
NSN 4140-01-082-8065
NSN 5996-00-163-1797
NSN 5935-00-578-4428
NSN 5975-00-244-2560
NSN 6320-01-102-0799
NSN 5998-01-288-5420