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 6610-00-578-6790
NSN 5996-01-250-2814
NSN 5998-00-782-0414
NSN 5975-01-010-6243
NSN 6645-01-473-3752
NSN 5930-01-035-4472
NSN 6645-00-246-4934
NSN 5910-01-200-3373
NSN 5855-01-391-7077
NSN 5960-01-331-3817
NSN 4140-01-055-6355
NSN 5950-01-092-0889