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 5915-00-171-1812
NSN 5935-00-577-4060
NSN 5930-00-458-4509
NSN 6110-01-021-6712
NSN 5950-00-892-8861
NSN 6145-01-142-5732
NSN 6110-00-620-8451
NSN 5910-00-952-2542
NSN 6320-01-113-7647
NSN 5990-01-305-8121
NSN 6130-01-245-0864
NSN 5910-01-157-9362