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 6135-00-321-6707
NSN 6220-01-014-4052
NSN 5945-00-773-9773
NSN 5999-00-778-0116
NSN 6135-01-246-0308
NSN 6110-01-514-0271
NSN 5915-00-079-3696
NSN 5998-00-114-1513
NSN 5920-00-298-0700
NSN 5960-01-186-2980
NSN 5965-01-545-8562
NSN 5975-00-001-8016