PB Fastener manufactures this ceramic washer, part number 702391, under the ANSI B18.22M-1981, R1990 (Regular) standard. This component, sold individually, exhibits excellent insulation properties and high resistance to heat and chemicals. Typically used in industrial and high-temperature applications, it ensures secure and reliable fastening. https://elecena.pl/product/28584995/pb-fastener-702391-washer-ceramic-ansi-b18-22m-1981-1pc 2025-05-03 https://elecena.pl/product/28584995/pb-fastener-702391-washer-ceramic-ansi-b18-22m-1981-1pc 2026-07-06