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 5895-01-316-5569
NSN 2925-01-299-6967
NSN 5975-00-025-6346
NSN 5999-01-237-0592
NSN 5935-01-068-0836
NSN 5960-01-045-0522
NSN 5960-01-434-5539
NSN 5920-00-402-1752
NSN 5945-00-660-6234
NSN 6110-01-354-3558
NSN 6320-01-185-3857
NSN 6650-01-273-1925