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 6145-01-502-9751
NSN 5960-00-633-1160
NSN 5990-00-786-0702
NSN 5925-01-085-5767
NSN 5960-01-125-2356
NSN 6145-01-261-5150
NSN 4140-00-939-8605
NSN 5950-01-415-5752
NSN 5998-00-057-6019
NSN 5935-00-431-3931
NSN 5996-01-499-7913
NSN 7035-01-145-5059