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 5905-01-441-2742
NSN 4140-01-272-4041
NSN 5945-01-408-4552
NSN 7035-01-305-1950
NSN 6110-00-226-1753
NSN 5945-01-246-9700
NSN 6620-01-386-5914
NSN 5835-01-190-0482
NSN 2925-00-881-3770
NSN 5905-00-105-6787
NSN 6130-01-062-4723
NSN 6135-01-457-7849