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 5930-00-609-6965
NSN 6645-00-171-9639
NSN 5915-01-596-4537
NSN 2925-00-513-6644
NSN 6620-01-395-2968
NSN 6620-01-223-5998
NSN 5998-01-318-4195
NSN 6110-00-920-1404
NSN 5910-00-246-3561
NSN 5998-00-661-0380
NSN 6240-01-426-5581
NSN 6145-01-243-6585