Good EPDM tube should with good sprial strip for match to improving CST whole level.EPDM is the most popular among cold shrink products.It has many advantages:

1.Continuous operating in cold and hight temperature

2.Suits for an extensive range of cable sizes because of the shrinkage

3.Retains its resiliency and pressure even after prolonged years of ageing and exposure, seals tight against moisture and water

4.Good weather resistance, ozone ageing, ultraviolet and salt mist corrosion resistance, performs stably under long-period exposure to the sun

5.Excellent tear resistance

6.Simple installation, requires no special heating tools , and adhesive to seal the connections