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 6610-00-367-9603
NSN 6220-01-198-7217
NSN 5985-01-486-2110
NSN 6145-01-647-4096
NSN 6130-00-407-5645
NSN 6130-00-170-4062
NSN 5998-01-640-6904
NSN 5998-00-195-5076
NSN 5835-01-313-3375
NSN 5950-01-215-8697
NSN 4140-01-524-4301
NSN 5965-00-387-6880