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 6135-00-086-7530
NSN 5920-01-333-2376
NSN 6650-01-471-2171
NSN 5998-01-470-2006
NSN 6220-01-012-2191
NSN 5985-01-403-2835
NSN 5960-00-204-7506
NSN 7035-01-332-9582
NSN 5990-01-300-7801
NSN 5945-00-529-0409
NSN 5945-00-938-5396
NSN 5998-01-326-6363