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 5930-01-437-8575
NSN 5996-01-355-6075
NSN 5985-00-323-1317
NSN 6110-00-816-9715
NSN 5965-00-121-0923
NSN 5910-01-352-8886
NSN 5996-01-524-8953
NSN 5999-01-085-5540
NSN 5935-00-033-4505
NSN 5930-01-372-0269
NSN 6610-01-579-2984
NSN 6320-01-388-3125