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 6135-01-508-3784
NSN 5975-00-079-9028
NSN 5910-01-111-1091
NSN 6135-01-370-9440
NSN 5965-00-161-9011
NSN 6620-01-593-0817
NSN 7035-01-413-6697
NSN 5915-00-256-0040
NSN 5930-00-342-7467
NSN 6320-00-701-0437
NSN 5985-01-616-0377
NSN 6610-00-527-8892