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 5990-01-379-8794
NSN 5910-00-618-0196
NSN 5996-00-826-3198
NSN 5960-01-474-4843
NSN 5930-01-344-9330
NSN 6130-00-688-5603
NSN 5905-00-983-2437
NSN 5945-00-415-1789
NSN 2925-00-391-0331
NSN 5998-01-318-2608
NSN 5925-00-977-5843
NSN 7035-01-512-1826