Neoprene backing (gasket)
A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use shim. For items fabricated from ceramic or electrically rated materials by specification or industry standards use insulator (1), washer. Excludes disk, valve, graphite impregnated and lubricated items.
Classification: Washers other than lock washers, iron or steel
NSN 5855-01-624-2678
NSN 6130-01-098-2370
NSN 5960-00-284-5751
NSN 6130-01-127-5738
NSN 5915-01-473-2455
NSN 5915-00-373-0821
NSN 5920-01-466-9498
NSN 5930-01-394-3738
NSN 5998-01-303-9177
NSN 5855-01-634-0259
NSN 5998-00-202-8590
NSN 5999-01-357-9414