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 5965-01-364-3002
NSN 6645-00-085-7603
NSN 5925-01-150-8127
NSN 6645-01-485-3517
NSN 6650-01-482-4284
NSN 4140-01-142-4623
NSN 5930-00-058-9592
NSN 5990-01-605-4769
NSN 5835-00-946-2656
NSN 4140-00-170-5152
NSN 6645-01-225-4768
NSN 6105-01-550-7644