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 6110-01-104-1375
NSN 6620-01-413-1951
NSN 6105-01-621-3017
NSN 6220-01-606-2005
NSN 5935-00-186-1733
NSN 5915-00-100-5239
NSN 6645-01-657-2604
NSN 6650-01-527-0465
NSN 6645-01-452-8469
NSN 6320-00-313-9114
NSN 5895-01-433-9069
NSN 5920-01-123-9854