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 5975-01-411-5626
NSN 2925-01-027-1293
NSN 5855-01-593-6422
NSN 5950-00-087-9461
NSN 2925-00-554-6956
NSN 6105-01-435-2575
NSN 5895-01-506-8460
NSN 5996-01-381-3151
NSN 6320-01-162-5977
NSN 6320-01-149-8865
NSN 6320-00-583-3104
NSN 5998-01-572-1377