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 6220-00-171-8638
NSN 5935-01-630-1668
NSN 6685-01-547-3484
NSN 5999-01-170-4354
NSN 5930-01-359-4851
NSN 6645-01-137-7974
NSN 6105-00-226-2185
NSN 5905-00-562-0294
NSN 4140-01-525-0148
NSN 6220-01-067-8142
NSN 5960-01-458-0774
NSN 5960-01-128-9359