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 5905-01-249-7859
NSN 5965-01-469-2054
NSN 5985-01-361-8982
NSN 6610-00-695-2280
NSN 7035-01-374-7954
NSN 6105-00-809-7509
NSN 4140-01-265-3736
NSN 5935-01-573-8071
NSN 6610-00-677-1728
NSN 6135-01-440-9412
NSN 5998-01-409-2874
NSN 6145-01-251-7652