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 6645-01-587-2985
NSN 5930-00-137-8560
NSN 6105-01-528-8027
NSN 5998-01-527-0308
NSN 6105-01-424-4902
NSN 5996-01-381-2876
NSN 5998-00-262-4879
NSN 6320-01-262-8642
NSN 6240-00-591-6836
NSN 5930-01-259-5931
NSN 5985-00-541-7714
NSN 5920-01-377-5803