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 6320-01-450-1696
NSN 5990-01-189-3201
NSN 5895-00-886-1542
NSN 5855-00-125-0778
NSN 6150-01-109-9086
NSN 5990-00-186-2445
NSN 5998-01-068-3971
NSN 7035-01-455-7277
NSN 6240-01-206-4809
NSN 5985-00-636-8689
NSN 5915-01-332-3448
NSN 5895-00-313-9098