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 5925-00-133-5365
NSN 5895-01-592-3100
NSN 6645-00-634-9317
NSN 6240-01-181-1187
NSN 5930-01-335-0379
NSN 6150-01-195-5381
NSN 5998-01-369-0990
NSN 5935-01-335-5520
NSN 5915-00-061-6245
NSN 6320-01-189-6891
NSN 6320-00-433-2773
NSN 5930-01-169-5301