ug338 orgPolypipe Underground Drain Riser Sealing Ring is desned to be used with the UG438 Side Riser. It provides a dry fix to seal the riser joint to the chamber base.Spartan-6 FPGA Memory Controller User Guide (UG388) - UG388 ug388.pdf Document ID UG388 Release Date Revision 2.3 English Back to home page