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 5975-01-435-4899
NSN 5999-01-414-0579
NSN 5935-01-279-3415
NSN 5910-01-527-5823
NSN 6620-00-006-6418
NSN 6130-01-382-8844
NSN 5975-01-244-3061
NSN 6150-01-536-7983
NSN 6320-00-336-9123
NSN 6150-01-209-2673
NSN 6320-01-622-5493
NSN 6610-00-783-8786