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 5925-01-090-3927
NSN 6620-00-253-6329
NSN 5960-01-061-9166
NSN 5835-01-236-5906
NSN 5965-01-035-0415
NSN 7035-00-727-4068
NSN 5990-00-419-7584
NSN 5930-00-111-2474
NSN 5895-01-577-3464
NSN 7035-01-418-5499
NSN 5965-01-422-9770
NSN 6135-01-121-3225