NR- 5 Natural rubber Petrochemicals Rubber - Natural rubber, NR SEALANT >> Pre-formed tape / Gasket Natural rubber (NR) breaking strength, good dynamic properties Products for civil enginnering industry: pipe gaskets rubber gaskets for pipes operating under pressure This product can be in touch with fuel, lubricant, oil, alkali and neutral acids. Natural rubber (NR). Used in pipe gaskets and in rubber gaskets for pipes operating under pressure. Offers breaking strength and good dynamic properties. Offers resistance to fuel, lubricant, oil, alkali and neutral acids.