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 6320-01-415-0953
NSN 5895-01-384-3736
NSN 5998-00-114-2782
NSN 4140-01-462-5901
NSN 5990-00-471-9767
NSN 5985-00-777-4211
NSN 5910-01-543-6551
NSN 5960-00-161-0723
NSN 5930-00-618-2433
NSN 4140-01-131-3124
NSN 6685-01-106-8396
NSN 5996-01-529-0639