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 5895-01-278-9379
NSN 5990-01-595-9441
NSN 5920-00-325-3980
NSN 5996-00-967-9263
NSN 5935-00-477-9303
NSN 5930-01-437-7367
NSN 5985-00-124-2314
NSN 5910-01-245-8369
NSN 5930-00-942-6577
NSN 7035-00-063-5245
NSN 5960-00-677-7444
NSN 5965-00-067-7393