Type: Solar Water Heater Parts Brand Name: Jiushun Style: dust proof loop ISO 9001 certificates various colors/sizes Products feature1,made of 100% silicone material 2,nontoxic, odorless, non-corrosive ,antioxidative3,Each product have good quality and a long service life. Product attributesNameDust proof loopFull specifications20,25,32,47,58,70mmProduct size Inner diameter 20mm Outside ...