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 5960-01-085-7191
NSN 6135-01-546-4588
NSN 5925-01-279-4415
NSN 6145-01-103-4863
NSN 2925-01-083-3986
NSN 5910-01-501-3102
NSN 6105-01-037-9577
NSN 5855-01-412-5147
NSN 5910-00-154-0547
NSN 5915-01-175-1628
NSN 6610-01-371-3006
NSN 5895-01-480-2093