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 6610-01-398-2554
NSN 5855-01-276-5447
NSN 5975-01-559-9279
NSN 5975-00-400-2630
NSN 5895-01-254-4209
NSN 6320-00-108-7049
NSN 7035-01-526-0191
NSN 6610-01-160-3770
NSN 6110-01-441-9562
NSN 5855-01-450-8018
NSN 5945-00-905-1702
NSN 6240-01-219-3384