Best Permanently Flexible Sealant

Franklin 2300 Titebond Polyurethane Liquid Glue, 12 oz Bottle (Pack of 6)

Shoe Goo is a superior adhesive and sealant that easily and permanently repairs all types of footwear.
Repairs all leather, vinyl rubber and canvas shoes.

Principally used as a pipe thread sealant.
Rolls on dry, permanently seals joints and at the same time provides lubricant so the joint can be opened with ease at later date.
Stable through a temperature range of -450˚F (-268˚C) to 500˚F (260˚C).
Resin- and varnish-absorptive black acetate cloth backing.

Silicone sealing tools: it’s a useful tool for smoothing sealing lines and caulking lines, which helps save sealant without masking tape when you apply it for sealing work.
Flexible and durable material: the caulking tools is made of flexible silicone with good quality, which is durable and have a long lifetime.
Each package includes 4 pieces blue sealant tools in different shapes.
Different edges: caulking tools provide more than 15 different edges, it can meet your needs in sealing work when you seal the different places and angles.
Re-usability: the caulking tool can repeat to use and good for any edge, corners, joints.
Tidy up easily, just clean them with a damp cloth and convenient to apply next time.
Wide application: the caulking tool is suitable for most types of sealant such as DIY crafts or floor silicone sealant, silicone, acrylic, resin, grout and more.

Enclosed Trailer Roof Leaking - Lap Sealant creates a secure, strong seal with the roof’s edges, air vents and more. RV Caulking Sealant prevents leaks with its waterproof and breathable seal that will not shrink and stays flexible.
Easy to Apply - RV Roof Sealant can be applied in wet or dry conditions.Use the caulking guns(not include) to apply.
Excellent Adhesion to Many Surfaces - Compatible with EPDM,TPO sheeting and most of RV roofing material,Adheres to aluminum, galvanized metal, fiberglass ,vinyl and concrete.
Premium Grade - even under the most extreme conditions, RV Self Leveling Lap Sealant stabilized to last for long time / Working Temps: -40° F to 200° F.
Eco-Friendly Products- Eazy2hD professional-grade RV flex repair caulking sealant non-hazardous formula is safe to use indoors and outdoors, non-toxic to you, your family, or pets.

Damplifier Butyl Sealant Tape is a premium grade, butyl rubber sealant tape that is pliable, sticky, and tough enough for any project. This putty tape is double sided to flexibly seal a variety of gaps..
This sound deadening tape belongs in your tool box. Waterproof, chemical resistant, temperature resistant to 200°F, very pliable to flatten or stretch – often preferred over caulk, glue, or other sealant tape..
At 1/2” wide and 1/4" thick, Damplifier putty tape will seal thicker gaps, but is flexible to flatten out as thin as you want. Clean surface before applying. Adheres to metal, wood, glass, and masonry..
Used to create a seal or isolate rattling parts in any automotive application (car, truck, RV, boat, camper van) and around the house (window, screen door, skylight, vent, metal roof). Quick and easy to adhere and create a watertight seal, making it an excellent window weld..
Proudly made in the USA. Use Damplifier Butyl Tape in your vehicle to re-attach a vapor barrier, mount subwoofers, or as taillight / headlight sealant. In an RV or camper van, this flexible sealant is used as putty tape to seal windows or corners..