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 6610-01-265-1824
NSN 6145-01-082-7854
NSN 5965-01-018-8138
NSN 6150-01-289-4142
NSN 5950-01-416-2474
NSN 5960-01-299-9182
NSN 5990-01-065-0492
NSN 6220-00-978-3172
NSN 6150-00-602-7812
NSN 5920-00-225-4758
NSN 6110-00-900-6410
NSN 5915-01-589-8341