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 5915-00-334-3008
NSN 6240-01-285-7616
NSN 6610-01-088-5871
NSN 5990-01-419-0661
NSN 6130-01-413-8741
NSN 6150-00-627-2081
NSN 6150-00-566-3823
NSN 5998-01-035-8673
NSN 5925-00-253-0096
NSN 6320-01-211-6578
NSN 6645-00-061-1885
NSN 2925-01-542-1865