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 5950-00-542-0627
NSN 6150-01-211-9794
NSN 5835-01-366-5906
NSN 6645-01-218-5234
NSN 5835-01-436-6549
NSN 7035-01-486-4118
NSN 2925-01-225-0713
NSN 5960-01-009-5983
NSN 7035-00-523-7492
NSN 6685-01-634-0611
NSN 6620-00-439-2442
NSN 6645-01-643-7151