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 4140-01-267-5137
NSN 5975-00-019-4024
NSN 5960-01-321-2750
NSN 6610-01-486-4522
NSN 5950-01-583-3026
NSN 5975-01-549-8316
NSN 5990-01-093-3087
NSN 6220-01-499-1373
NSN 6135-00-967-3112
NSN 6220-01-215-8627
NSN 6650-01-131-0323
NSN 5925-01-401-5314