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 5965-00-144-2543
NSN 4140-01-065-8148
NSN 5975-01-416-8564
NSN 5910-00-058-6277
NSN 2925-00-782-1498
NSN 6135-00-461-3590
NSN 5998-00-171-4492
NSN 5950-01-116-4155
NSN 6220-01-003-9126
NSN 5935-00-905-8839
NSN 5910-01-325-0284
NSN 5960-00-078-9500