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 6645-01-258-0370
NSN 5935-01-046-5586
NSN 5996-00-698-3971
NSN 5925-00-236-9000
NSN 5990-01-601-0466
NSN 5996-01-338-0555
NSN 5999-01-238-2794
NSN 5985-01-556-4421
NSN 5920-00-658-7219
NSN 5910-00-225-8920
NSN 5990-01-553-6859
NSN 5835-00-055-0953