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 5925-01-195-8068
NSN 5835-01-301-0022
NSN 6220-00-926-1331
NSN 5930-01-519-9249
NSN 5920-01-191-1199
NSN 5895-01-430-9208
NSN 6610-01-167-8747
NSN 5975-00-481-9094
NSN 6130-01-123-1096
NSN 6240-01-220-6066
NSN 5960-00-435-8335
NSN 5925-01-063-1766