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 5985-01-573-2791
NSN 5930-00-407-2541
NSN 5935-01-233-8215
NSN 6645-01-656-6416
NSN 5950-01-029-8641
NSN 6645-00-191-4978
NSN 4140-01-160-7666
NSN 5855-01-196-7082
NSN 5945-01-051-8576
NSN 5925-01-099-0974
NSN 5950-01-394-4931
NSN 6620-00-264-8030