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 6620-01-244-3427
NSN 5950-00-789-0324
NSN 6620-01-615-0596
NSN 6610-00-355-0450
NSN 5855-00-973-5717
NSN 5965-00-471-5018
NSN 5895-01-044-5425
NSN 6220-01-632-3030
NSN 5945-01-428-9943
NSN 5965-00-548-3591
NSN 5975-01-640-7748
NSN 6240-00-383-7668