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 6620-01-288-8249
NSN 6620-00-849-9940
NSN 5920-01-603-8748
NSN 5950-00-098-9139
NSN 5975-01-485-2385
NSN 5915-00-595-8090
NSN 5996-01-152-4115
NSN 7035-01-232-7263
NSN 5835-00-391-5773
NSN 6145-00-793-7816
NSN 5950-01-023-8328
NSN 5996-01-095-3598