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 6145-01-625-5955
NSN 6220-01-038-1404
NSN 5925-01-370-4417
NSN 5895-01-249-9536
NSN 6220-01-567-2426
NSN 5965-00-725-4453
NSN 5999-01-626-2866
NSN 6620-01-633-8443
NSN 5975-01-442-5558
NSN 6240-01-551-7067
NSN 6610-01-446-7635
NSN 6145-01-079-3265