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 6240-01-644-4767
NSN 6110-01-274-8039
NSN 5905-01-526-1701
NSN 5835-00-016-0389
NSN 5965-01-621-4529
NSN 5975-01-370-0685
NSN 5930-00-382-5761
NSN 5910-01-623-7583
NSN 5996-00-665-2869
NSN 5895-00-964-8989
NSN 6105-01-578-7537
NSN 6645-01-171-0187