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 6145-01-125-6361
NSN 5935-01-634-0668
NSN 5925-01-253-6216
NSN 5945-01-446-4534
NSN 6620-01-565-8740
NSN 5950-01-596-3710
NSN 6320-01-373-9355
NSN 5895-01-440-7954
NSN 5975-01-177-1425
NSN 6105-00-812-0505
NSN 6320-01-207-0636
NSN 5930-00-065-8620