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 5990-00-309-0023
NSN 6135-00-334-4500
NSN 5910-00-866-4154
NSN 6145-01-029-4184
NSN 5998-00-161-4228
NSN 5915-01-085-0048
NSN 6610-01-464-5517
NSN 5960-00-549-0960
NSN 2925-00-964-7128
NSN 2925-00-646-6099
NSN 6685-00-582-1215
NSN 5990-01-042-8524