The Korobon Design is gasket no cost with machined impregnated graphite plates cemented collectively. As a result, there's no possibility to repair or clear internally. Graphite heat exchangersAnnular groove graphite heat exchangersHeavy-obligation graphite condensersGraphite partial condensersGraphite block heat exchangersGraphite shell and tube heat exchangersAnnular groove graphite... https://www.pinterest.com/pin/993958580252146789/