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 5985-01-295-9511
NSN 5990-01-246-2488
NSN 5998-01-469-7720
NSN 6220-01-157-9062
NSN 5960-01-361-4574
NSN 6130-01-098-7175
NSN 6110-00-459-4217
NSN 5975-01-466-2014
NSN 6110-00-456-2058
NSN 6645-00-296-8310
NSN 5935-00-276-9413
NSN 5975-00-499-0791