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 6135-00-756-6149
NSN 5905-01-196-5082
NSN 5945-01-567-4244
NSN 5990-00-066-2217
NSN 2925-01-197-7864
NSN 5990-01-110-8979
NSN 5999-00-806-8746
NSN 2925-00-251-0105
NSN 6135-01-531-1413
NSN 5950-00-884-2174
NSN 4140-00-757-4437
NSN 5975-01-067-6400