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 6240-01-441-8368
NSN 5965-00-871-8987
NSN 5855-01-179-8887
NSN 5960-01-078-3418
NSN 5950-01-271-4819
NSN 5960-01-174-4480
NSN 5960-01-445-3622
NSN 5960-01-481-3722
NSN 6645-01-443-1103
NSN 6105-01-204-5668
NSN 7035-01-061-6424
NSN 6220-01-119-6711