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 6135-01-391-6515
NSN 5895-01-238-7494
NSN 5925-00-164-2965
NSN 7035-01-443-3052
NSN 6620-00-243-1759
NSN 5835-00-833-7080
NSN 5835-00-402-5607
NSN 6110-00-146-2114
NSN 5960-01-215-0992
NSN 5925-00-041-1935
NSN 5835-01-354-0566
NSN 6620-00-349-4703