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 6220-00-413-6589
NSN 6645-01-330-6028
NSN 6110-00-978-8329
NSN 6135-01-100-3593
NSN 5905-01-284-7762
NSN 5990-01-425-2175
NSN 5975-01-534-3769
NSN 4140-00-602-5973
NSN 5915-00-144-5548
NSN 6220-01-449-0952
NSN 7035-00-193-2269
NSN 5835-01-152-9483