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 6150-01-363-9299
NSN 5960-01-553-4557
NSN 5985-00-529-0093
NSN 5925-01-360-0641
NSN 6110-01-573-7132
NSN 6130-00-893-0847
NSN 5945-01-112-0841
NSN 2925-00-258-9786
NSN 5855-01-006-1827
NSN 5910-00-930-6170
NSN 7035-01-271-1643
NSN 6620-01-458-8074