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 6150-00-278-1294
NSN 5990-01-320-1412
NSN 5975-01-065-2953
NSN 5895-01-425-2718
NSN 6620-01-610-5081
NSN 5930-01-441-3053
NSN 5945-01-361-0111
NSN 5930-01-651-1310
NSN 6320-00-036-3688
NSN 2925-00-782-1498
NSN 6130-00-481-5993
NSN 6620-00-251-0569