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 5925-01-233-8157
NSN 5998-01-412-0928
NSN 5985-01-142-2821
NSN 6110-00-377-3220
NSN 5990-01-181-4143
NSN 6220-01-406-3167
NSN 5985-01-412-0569
NSN 5855-01-520-4985
NSN 5925-01-482-3642
NSN 5999-00-812-3821
NSN 5915-00-771-1645
NSN 4140-01-192-2944