47mm 58mm Silicon Ring&Dust Proof for Solar Water Heater

Silicon ring & dust proof for solar water heaterThe dust ring can be divided  as follows,1.According to the material:  PVC dust ring & silicone dust ring2.According to appearance types:  plane type & groove typeThe dust ring we show you now is PVC material and groove type. Traits of our PVC dust rings:1) Strong acid resisting and strong base resisting2) Durable and ont easy to discolor3) Excellent flame retardancy Application To prevent external dust, rain enter into the seal organization. Sharp lip structure, low friction coefficient. Not only prevent outside dust into the system, but also reduce the attrition of the equipment. Performance     Nonflammable, high strength, good resistance to climate change and the geometrical stability. Besides PVC have strong resistance to oxidant, reductant and acid all ./* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1