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 5925-01-298-7163
NSN 6650-01-472-3955
NSN 5855-01-574-3597
NSN 5855-01-552-4649
NSN 5930-01-135-9680
NSN 5895-01-158-6002
NSN 6145-01-634-0388
NSN 6645-00-585-5932
NSN 5925-00-488-8030
NSN 6135-00-798-1425
NSN 5965-01-556-4337
NSN 6320-01-445-5893