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 6240-01-516-8393
NSN 5990-01-322-9781
NSN 6320-01-103-6218
NSN 6650-00-658-9627
NSN 5855-01-628-8254
NSN 5996-01-123-9038
NSN 6645-00-483-2981
NSN 6620-01-486-8002
NSN 5998-00-451-9934
NSN 6105-01-126-4937
NSN 5998-01-383-9758
NSN 2925-01-602-1975