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 6320-01-170-4068
NSN 6105-00-197-2128
NSN 5925-01-209-1825
NSN 6240-00-197-6819
NSN 6220-01-616-9805
NSN 5990-01-525-2250
NSN 6620-01-364-7461
NSN 5975-01-592-4909
NSN 5855-00-156-5489
NSN 6610-00-009-2736
NSN 5925-01-510-8584
NSN 5910-00-917-0672