PE-Xa, PE-Xb and PE-Xc are all made of cross linked polyethylene. The a, b and c identify the manufacturing method, a: Peroxide method, b: Silane method and c: Irradiation method.
All are suitable for wet UFH applications.
PE-Xa tends to be the most flexible, kinks may be repaired with a heat gun but has a lower bursting pressure than PE-Xb.
PE-Xb tends to have the greatest resistance to oxidation, highest bursting pressure, although kinks must be cut out.
PE-Xc is the most environmentally friendly to manufacture although is the least resistant to kinks.
