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 6240-00-056-0737
NSN 5999-01-429-2156
NSN 6320-01-516-3836
NSN 5999-01-410-2867
NSN 6150-00-222-5302
NSN 5945-01-630-2480
NSN 6650-01-010-4204
NSN 6145-00-350-6657
NSN 5990-00-879-0476
NSN 6110-00-627-7872
NSN 5975-00-318-4623
NSN 5935-01-417-3161