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 6645-00-498-6869
NSN 6685-01-074-4695
NSN 5990-00-893-8998
NSN 2925-00-973-2574
NSN 6620-01-508-7902
NSN 5985-01-328-3886
NSN 6145-01-455-5570
NSN 6610-01-408-1134
NSN 4140-00-257-5215
NSN 5930-01-446-1543
NSN 5915-01-624-2182
NSN 5996-01-505-6099