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 7035-01-099-9163
NSN 6105-01-235-8021
NSN 6135-00-812-9039
NSN 5990-01-147-5225
NSN 6620-01-114-0841
NSN 5965-01-192-1366
NSN 5855-00-167-7893
NSN 5920-01-381-1306
NSN 5960-01-453-6170
NSN 5985-01-052-3811
NSN 5945-01-617-3739
NSN 6135-01-230-4399