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 6610-01-161-4835
NSN 5950-00-926-0760
NSN 5960-00-512-9121
NSN 5935-00-030-1563
NSN 6220-01-306-2428
NSN 6645-01-408-3042
NSN 5910-01-205-7474
NSN 6645-01-194-3214
NSN 5920-01-541-4640
NSN 5835-01-384-3206
NSN 5915-01-003-6018
NSN 4140-01-422-4431