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 6650-01-555-8819
NSN 5950-01-046-8960
NSN 6110-01-040-1780
NSN 5999-01-463-6255
NSN 5945-00-875-8886
NSN 5930-01-111-0087
NSN 6135-00-284-1406
NSN 6145-01-104-8186
NSN 5950-01-367-6915
NSN 5935-01-578-0613
NSN 5985-01-508-4226
NSN 6610-01-576-5890