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 6320-01-084-8821
NSN 6150-01-481-4449
NSN 6620-01-218-6203
NSN 6320-00-925-0558
NSN 5920-01-283-2611
NSN 5905-00-446-9083
NSN 5965-00-716-7078
NSN 6130-01-483-6804
NSN 5975-01-494-2374
NSN 6240-01-106-6113
NSN 6645-01-545-6853
NSN 5996-00-525-1777