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 6110-01-063-7423
NSN 6240-01-195-1750
NSN 6130-00-860-1076
NSN 5975-01-211-6594
NSN 6320-00-433-2773
NSN 5915-01-020-6509
NSN 5996-01-204-0675
NSN 5930-01-621-6318
NSN 6110-00-784-1370
NSN 6620-01-202-1703
NSN 5950-01-305-8642
NSN 4140-00-917-8734