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 5996-00-868-7170
NSN 4140-01-288-0764
NSN 5915-01-614-7157
NSN 5895-00-990-2798
NSN 6650-00-740-7338
NSN 6130-00-751-8988
NSN 5985-01-222-2497
NSN 7035-01-433-8021
NSN 5950-01-586-9013
NSN 5950-01-599-1682
NSN 7035-00-235-3529
NSN 6110-00-456-2058