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 6135-00-643-4843
NSN 6645-01-523-8809
NSN 5965-01-141-6485
NSN 5925-01-023-1411
NSN 5990-01-485-0260
NSN 6220-01-013-9498
NSN 6130-00-728-9621
NSN 6650-01-492-5263
NSN 5975-01-523-9415
NSN 6620-01-242-9247
NSN 4140-00-949-8572
NSN 5985-00-119-9062