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 5975-01-634-0678
NSN 6320-00-405-2348
NSN 5855-01-511-0995
NSN 6135-00-377-9165
NSN 5996-01-620-2442
NSN 5985-00-604-3327
NSN 6135-00-767-0331
NSN 6240-01-392-4226
NSN 6650-00-851-7615
NSN 6150-01-303-9462
NSN 4140-01-373-5655
NSN 5999-01-430-9391