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 5925-01-408-1143
NSN 2925-00-494-5537
NSN 5945-00-064-9087
NSN 6150-01-389-1978
NSN 5950-01-432-2878
NSN 6320-01-576-6310
NSN 4140-00-038-4276
NSN 5855-01-068-3683
NSN 6610-00-232-9485
NSN 5895-01-646-9018
NSN 6320-01-215-2284
NSN 5950-01-238-1655