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 5895-01-127-6800
NSN 6145-00-007-9977
NSN 6145-01-246-3988
NSN 5945-00-457-8964
NSN 5905-00-902-0694
NSN 6645-01-623-8825
NSN 5990-01-063-9459
NSN 5930-00-299-3428
NSN 6220-00-711-3579
NSN 5930-00-067-6183
NSN 5930-00-853-9075
NSN 5985-01-429-0074