The Shur-Lock™ II Coupling System is a patented design for high-integrity joining of HDPE and PVC conduits. The body of the Shur-Lock™ II is manufactured from high-density polyethylene. External band clamps and locking rings are corrosion-resistant stainless steel. O-ring joints have been air pressure tested (distributor reports: up to 125 PSI / another source reports >130 psi) and water sealing capability withstands head pressures greater than 20 PSI. The Shur-Lock II is re-enterable, requires no special tools for installation, and provides no I.D. reduction. Suitable for use with HDPE, PVC, FRP and steel conduit types.