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 6135-01-142-2417
NSN 5960-01-069-2009
NSN 5999-01-058-1528
NSN 5998-01-484-0843
NSN 5950-01-008-5501
NSN 6620-01-348-4799
NSN 5930-01-497-0992
NSN 6135-01-408-9244
NSN 5925-01-222-6642
NSN 6610-01-272-9691
NSN 6650-00-342-6447
NSN 5895-00-256-1682