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 4140-00-972-9513
NSN 5855-01-203-4719
NSN 5950-01-069-6086
NSN 5998-01-152-7085
NSN 6645-00-006-6387
NSN 6685-01-618-8312
NSN 5965-01-502-7006
NSN 5998-00-623-2954
NSN 5965-00-926-2591
NSN 5960-01-292-8309
NSN 6220-01-557-3091
NSN 6220-00-253-9413