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 6145-01-580-2441
NSN 5996-00-960-9245
NSN 5920-00-454-4263
NSN 5905-00-399-1394
NSN 5935-00-679-5346
NSN 6240-01-483-5642
NSN 6135-01-529-8523
NSN 5920-01-304-7587
NSN 6610-01-278-9704
NSN 6620-00-067-4946
NSN 6645-00-892-5750
NSN 6650-01-262-3771