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 4140-01-139-6192
NSN 6105-01-643-9493
NSN 6105-01-249-3365
NSN 5985-01-409-0427
NSN 6105-01-375-9993
NSN 6150-00-253-3796
NSN 5965-01-527-5680
NSN 6320-00-823-2015
NSN 5985-00-455-3085
NSN 6620-00-035-5813
NSN 6645-01-386-6311
NSN 6145-01-622-8830