Chanzon 1-1/2 inch (39mm) Type G Waterproof Heat Shrink Tubing Marine 3:1 Ratio with Eventronic Dual Wall Adhesive Tubes Glue Inside 39G Black 80Ft/25M 1pcs: Amazon.com: Industrial & Scientific
How to Shrink Rubber: 7 Steps (with Pictures) - wikiHow
Uxcell Heat Shrink Tubing 1/2" Dia 0.87" Flat Width 3:1 rate Shrinkable Tube Cable Sleeve 10Ft Black - Walmart.com
Red Solid Silicone Rubber Sealing Strip Round O Ring Cord Seal Gasket Dia 1-20mm | eBay