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 6685-01-501-5362
NSN 5996-01-428-7813
NSN 5998-01-121-3389
NSN 5895-00-205-2924
NSN 6220-00-586-6645
NSN 5935-01-592-7100
NSN 6110-00-577-8156
NSN 5996-01-511-7605
NSN 6145-01-206-9957
NSN 5945-01-087-6501
NSN 5915-00-484-1128
NSN 6240-01-549-1743