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 6320-00-521-9350
NSN 5935-01-218-6605
NSN 5990-01-617-5156
NSN 5925-01-236-8070
NSN 4140-00-175-9114
NSN 6145-00-905-3236
NSN 6105-00-630-3229
NSN 5975-01-125-5062
NSN 5925-01-060-0405
NSN 6320-01-350-5570
NSN 7035-01-610-2530
NSN 4140-00-439-4100