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 6645-01-180-6219
NSN 6650-01-331-5243
NSN 6220-01-180-3703
NSN 5930-01-304-6956
NSN 5925-01-034-5225
NSN 5925-00-214-8386
NSN 5935-01-110-1250
NSN 5950-01-502-3929
NSN 5950-00-910-6419
NSN 6320-01-056-1164
NSN 6110-01-360-6730
NSN 5950-01-183-5375