LOCTITE® SI 5331 has been developed for securing and sealing threaded connections of plastic and metal for hot and cold water, e.g. in pipe systems or plastic drainage systems in industry and agriculture. The product has the following approvals and certificates: WRC approval, complies with BS 6920 for potable water: 0706521 DVGW approval, tested according to EN 751-1; P1 NSF Reg. No.: 123620 General purpose liquid thread sealant for sealing metal and plastic threads in hot or cold water connections WRC approved, complies with BS 6920 for potable water: 0706521 Secures the connection against loosening due to vibration P1 NSF Reg. No.: 123620 DVGW approval, tested according to EN 751-1