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 5960-01-179-9350
NSN 5950-00-753-0955
NSN 5835-01-519-3834
NSN 6135-01-413-4747
NSN 5975-01-232-2238
NSN 5998-01-306-6454
NSN 5925-00-700-8674
NSN 6130-01-296-9766
NSN 5930-01-646-3648
NSN 5950-00-420-1653
NSN 5985-01-310-7242
NSN 5999-00-113-9325