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 6105-00-181-9774
NSN 4140-01-304-5882
NSN 6105-01-190-5507
NSN 5996-01-432-2000
NSN 5960-00-269-4762
NSN 5985-00-575-4416
NSN 5910-01-281-7666
NSN 7035-01-145-5059
NSN 5975-01-061-2182
NSN 6150-00-707-8804
NSN 5930-00-124-5041
NSN 5990-01-580-2191