All screws ared made of PA plastic there are oil-proof grommets between cover and body,that protective class can reach IP65.

• 本产品所有外露紧固件均采用PA(尼龙)塑料螺钉。箱盖与箱体之间夹有耐油橡胶条，可保证其防护等级达到“IP65”。