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 2925-01-439-2650
NSN 6240-01-215-8485
NSN 7035-01-136-5235
NSN 6685-01-426-8929
NSN 6240-01-556-7096
NSN 5965-01-532-1198
NSN 6320-00-583-3104
NSN 6135-01-449-2144
NSN 7035-00-541-8516
NSN 5915-01-020-6509
NSN 6685-01-236-5231
NSN 6620-01-573-8003