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 6220-01-509-0538
NSN 7035-01-186-0024
NSN 5930-00-328-7299
NSN 5855-00-862-3345
NSN 5998-00-959-6018
NSN 6645-00-371-1861
NSN 5965-01-501-5638
NSN 5975-00-117-9515
NSN 5999-00-398-1583
NSN 5855-01-351-8909
NSN 5975-01-148-7259
NSN 6145-01-081-3182