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 5950-00-359-9607
NSN 6150-01-533-9970
NSN 5975-00-527-9656
NSN 5895-01-594-2368
NSN 2925-00-808-5077
NSN 5965-01-103-0398
NSN 5999-00-369-9457
NSN 5950-01-539-2928
NSN 5935-00-565-4573
NSN 5905-01-020-9254
NSN 5975-01-184-1697
NSN 5920-00-735-0783