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 5935-01-037-7732
NSN 5998-00-577-3519
NSN 5835-01-580-0446
NSN 5996-00-707-6228
NSN 5835-00-756-4366
NSN 5998-01-271-1768
NSN 5945-01-147-5727
NSN 5925-01-313-2378
NSN 6645-00-776-8234
NSN 6610-01-399-7613
NSN 6620-00-927-6177
NSN 6145-01-437-7710