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 5945-00-617-1351
NSN 6220-00-130-5857
NSN 5998-01-400-6739
NSN 5925-01-167-8144
NSN 6645-01-433-1398
NSN 6145-01-247-0200
NSN 6620-01-309-1287
NSN 6610-00-598-5268
NSN 5945-01-133-6985
NSN 5930-01-139-5128
NSN 5835-00-827-1904
NSN 6620-01-032-3937