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 6110-01-524-0457
NSN 5905-00-718-1761
NSN 6150-00-045-7158
NSN 5998-01-126-8769
NSN 6240-01-633-2239
NSN 5905-01-218-3985
NSN 5990-01-303-6110
NSN 6645-00-780-5260
NSN 5990-01-433-3786
NSN 5985-01-164-3564
NSN 4140-00-689-6551
NSN 5855-01-147-4785