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 5950-01-547-2693
NSN 5935-01-616-4854
NSN 5985-01-513-2182
NSN 6145-00-452-4501
NSN 5950-01-507-6010
NSN 6150-01-041-4884
NSN 5855-01-543-3338
NSN 5965-01-070-9265
NSN 6135-00-557-8874
NSN 2925-00-246-3077
NSN 5895-01-086-1342
NSN 6220-01-135-1650