I cut these sleeves from a new piece of 10" PVC Schedule 40 coupling from LASCO. 10" LASCO® PVC I U.S.A. PVC is harder and more slippery. Wider sleeves are more slippery (5" is the widest I can make these sleeves).

I cut these sleeves from a new piece of 10" Schedule 40 PVC pipe from GF Harvel. Inner Circumference. PVC is harder and more slippery. Wider sleeves are more slippery (DM for 8" wide sleeves or bigger).