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 6620-01-157-9267
NSN 5960-01-328-8248
NSN 6220-01-235-7091
NSN 4140-01-572-0906
NSN 5930-00-897-4937
NSN 5975-00-468-9924
NSN 5998-01-423-1070
NSN 5925-01-065-6374
NSN 6645-01-528-7152
NSN 2925-00-816-8765
NSN 5945-01-491-0173
NSN 5990-01-426-7350