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 5915-01-543-3732
NSN 6150-00-450-2813
NSN 6240-01-411-4603
NSN 5945-01-383-8423
NSN 5950-00-321-0328
NSN 6610-01-141-7014
NSN 5950-01-512-3277
NSN 6105-00-135-3813
NSN 5950-00-402-2480
NSN 2925-01-342-1712
NSN 6145-01-093-0036
NSN 5910-00-538-7982