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 5965-01-089-8579
NSN 2925-01-544-4880
NSN 6685-00-536-0476
NSN 6150-01-574-6786
NSN 5999-00-504-7895
NSN 5990-01-434-7913
NSN 5945-01-445-0956
NSN 5998-00-969-4474
NSN 5925-01-391-1014
NSN 6150-00-186-4159
NSN 6130-01-325-8118
NSN 5915-01-289-4155