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 6685-01-609-6396
NSN 6320-00-593-0379
NSN 5915-01-537-1155
NSN 5925-01-422-6653
NSN 5996-01-446-7962
NSN 5895-01-040-0679
NSN 5930-01-585-4295
NSN 6130-01-581-1277
NSN 6240-01-248-9254
NSN 5950-00-548-8385
NSN 5998-01-218-7107
NSN 5990-01-602-6701