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 6650-01-591-8574
NSN 6135-01-031-8078
NSN 5960-01-110-3440
NSN 6240-01-627-4142
NSN 5835-01-234-7039
NSN 6145-01-398-7451
NSN 5998-01-369-7439
NSN 6130-00-243-0380
NSN 6130-01-521-7348
NSN 5996-00-788-5906
NSN 5975-00-314-9623
NSN 6650-01-302-7684