Amazon has Gardner Bender 10-Foot Self-Sealing Silicone Repair Tape on sale for $8.23 . Shipping is free with Prime or on order $25+
- Self -bonding silicone repair tape
- Air & water tight seal
- Insulates to 400V mil
- Maintains flexiblity and water-tight sealing capacities at all temperature ranges
- Fuses to itself in seconds, forms permanent mold in 24 hours at room temperature, within minutes with application of heat source
Amazon offers free shipping with $25+ orders or get free 1 day shipping on all orders with a free trial of Amazon Prime. A prime trial is also free with Amazon Family (which also gets you up to 20% off diapers among other benefits) or Amazon Student. EBT/Medicaid Cardholders can save on Prime Membership here.