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 5998-00-343-7435
NSN 5905-01-403-2806
NSN 5965-01-473-6082
NSN 5945-01-267-1054
NSN 6240-01-276-6806
NSN 5945-00-108-9730
NSN 6610-01-461-1644
NSN 2925-00-471-1128
NSN 5925-01-379-7484
NSN 5975-01-554-5275
NSN 6650-00-304-6987
NSN 6320-01-097-5347