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 5895-01-581-4790
NSN 6105-00-920-3417
NSN 6110-00-542-2202
NSN 5975-00-158-8489
NSN 5996-01-555-4224
NSN 5925-01-235-0710
NSN 5990-00-566-5987
NSN 5990-01-299-2014
NSN 6650-00-144-4555
NSN 5910-01-483-3803
NSN 5920-00-644-3285
NSN 5998-00-101-7749