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 5935-00-512-5556
NSN 4140-00-990-3311
NSN 6145-01-238-4979
NSN 6220-01-076-4383
NSN 5895-01-275-6326
NSN 5996-01-353-0668
NSN 5985-00-980-4511
NSN 5910-01-243-0599
NSN 6650-00-804-2039
NSN 5960-01-573-6483
NSN 5945-01-445-6081
NSN 5915-01-406-3847