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 6110-00-807-2501
NSN 7035-00-337-8745
NSN 6240-01-435-3892
NSN 5998-01-290-4895
NSN 5975-01-555-8402
NSN 6650-01-391-7527
NSN 5895-01-584-6023
NSN 5855-00-145-3307
NSN 5950-01-508-4244
NSN 6320-01-215-2284
NSN 5990-00-504-6036
NSN 6135-01-079-7852