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 5910-01-322-5254
NSN 5965-01-377-3587
NSN 5999-01-653-2621
NSN 5915-00-326-2096
NSN 2925-00-225-5386
NSN 6620-01-199-7570
NSN 5835-00-003-0295
NSN 6610-01-470-7360
NSN 5996-00-957-6205
NSN 6145-01-284-1487
NSN 5915-01-471-7814
NSN 6105-01-617-6603