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 5999-01-237-4018
NSN 6645-00-726-2716
NSN 2925-01-525-8212
NSN 5915-01-388-1341
NSN 6650-00-276-9838
NSN 5925-01-024-9568
NSN 6240-01-356-1170
NSN 6150-01-519-3284
NSN 6650-01-580-8128
NSN 5935-01-387-7010
NSN 4140-01-074-2588
NSN 5930-00-043-3773