Butyl rubber has a long history as a waterproof seal, and it works. The prerequisite is that it is held by a flange or other device. It never hardens, but rather spreads when squeezed. It will sag under its own weight as the piece lingers. So for boat fittings, screw heads, hatches etc. It's perfect. Unlike polyurethane and silicone sealants, it does not "harden" but remains flexible and removable.
🏕️ RV Cover Saver: Gutter Spout Protection System Shields Your RV Cover
9 Review
🏠 Flexible and Durable White Butyl Tape for RV/Mobile Home Repairs - 1/8 inch x 1 inch x 30 feet (Single Roll)
9 Review
🚐 Camco RV Gutter Spouts with Extensions: Keep Your RV Dry with Quick Installation! (4 Pack, White)
9 Review
EternaBond Mobile Sealant Repair Authentic
9 Review
3 Pack 18" LATCH.IT RV Step Covers For Camper And RV Stairs - Fits 8-11" Depths - Keep Your RV Clean With Step Rugs
17 Review
Protect Your RV With LATCH.IT Shade: 7'X9' Zippered Screen Awning For Ultimate Wind Protection And Privacy.
15 Review
12V DC Electric Trailer Jack - 2000Lb Lift Capacity With Hard-Wire Connection
12 Review
Lippert Solid Stance RV Step Stabilizer Kit For 5Th Wheels, Travel Trailers And Motorhomes
20 Review