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 5920-01-168-7810
NSN 6145-01-411-3459
NSN 5950-01-421-1425
NSN 2925-00-856-0115
NSN 5990-01-223-6321
NSN 5965-01-319-5363
NSN 5996-00-933-1590
NSN 5920-01-314-6341
NSN 6620-00-998-6191
NSN 6220-00-142-5115
NSN 6645-00-971-2023
NSN 5996-01-097-3068