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 6320-01-435-5991
NSN 6110-01-010-4551
NSN 2925-00-088-6790
NSN 6145-00-570-0516
NSN 5935-01-580-0709
NSN 6620-01-601-7491
NSN 5996-00-647-5160
NSN 6105-01-602-6242
NSN 5910-00-543-0780
NSN 5950-01-427-3723
NSN 5950-01-363-8512
NSN 6320-01-384-3850