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 6105-01-171-1784
NSN 5975-01-008-5941
NSN 5895-00-945-0714
NSN 6150-01-305-6819
NSN 5960-01-586-5235
NSN 6110-00-525-3418
NSN 5985-01-441-6791
NSN 5905-01-452-1767
NSN 4140-01-011-6205
NSN 5998-01-455-4014
NSN 6645-00-930-3566
NSN 4140-01-270-0375