Does this product have a smell? Does it off gas?

I used it outside, and did not notice any smell.

good for sealing taillight lens on my camper ?

If you're sealing between the lens and the body, yeah, it would work. This is kind of like a tar compound...it is flexible and sticky so kind of think along the lines of pushing some chewing gum in a crack. It's not going to be pretty when the bulb burns out and you have to remove the lens to change it, there's going to be some residue left. but it will seal up the crack for sure.

Is this for RV skylight?

It should work great for an RV skylight. I use it to seal windows on boats so you should be fine.

If I apply this in sub-50F degree weather, does adhesion improve when temps go up? I'm using it under a solar panel mounting bracket, with screws.

Do you mean below 50F or did you mean minus 50 F? It took me a minute to figure it out. I assume you mean below 50 but not minus 50. Anyway yes to your question if it's below 50 but if it's minus 50 I'm not sure how it would hold up to apply. As in frozen state it might be brittle and getting the film off it might also be difficult. Anyway our temps here in NW MT have surprised us and warmed up above 50 in May nicely and that includes evenings. Often if you are in a warm climate you need to put in the fridge for a day or even freezer for a few hours to help you manage the properties of the butyl caulking. Think of this as a line of caulking in tape form because that's basically what it is. Also some people use two layers and over lap ends when they come together well beyond just a smidge think more like an inch or more overlap. It can spread out a bit. Good luck with your projects and some people like to apply in cooler temps because it can be easier to handle. But way below freezing probably NOT.

Llpt Butyl Tape 1 Inch X 33 Feet Black 1

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💪 Seal it once, seal it right — the last tape your projects will ever need!

UNMATCHED DURABILITY - Premium synthetic rubber ensures non-drying, non-hardening, and shock-absorbing performance for long-lasting seals.
ALL WEATHER RESILIENCE - Operates flawlessly from freezing -20°C to scorching 98°C, maintaining flexibility and adhesion in any climate.
EFFORTLESS INSTALLATION - Moldable and mess-free tape applies easily with instant adhesion—no special tools or skills required.
ULTIMATE LEAK PROTECTION - Creates airtight, waterproof seals that block wind, water, dust, oil, and corrosive chemicals—perfect for RVs, boats, windows, and roofs.
VERSATILE SURFACE COMPATIBILITY - Bonds instantly to metal, wood, glass, plastic, rubber, and more—even on jagged or curved surfaces.

LLPT Butyl Tape is a premium-grade, 1-inch by 33-foot black sealing tape made from synthetic rubber that delivers superior waterproofing and airtight protection. Engineered for extreme durability, it withstands temperatures from -20°C to 98°C without hardening or losing adhesion. Its versatile formula bonds instantly to a wide range of surfaces including metal, wood, glass, and plastic, making it ideal for sealing leaks in RVs, boats, windows, doors, and roofing. With a tensile strength of 17 pounds per inch and a paintable, mess-free application, this tape offers professional-grade performance for both indoor and outdoor projects.

Specifications

ASIN	B0822FNHFQ
Adhesive Format	tape
Adhesive Location	tape
Adhesive Material	Butyl
Adhesive Side Count	1
Best Sellers Rank	#1,759 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #4 in Butyl Tape
Brand Name	LLPT
Color	Black
Compatible Material	Metal, Wood, Glass, Plastic, Rubber, Cement, Stone and So on
Customer Reviews	4.7 4.7 out of 5 stars (3,527)
Included Components	Flexible putty product, thickness might not be equally all way
Item Dimensions L x W x Thickness	1"L x 1"W x 0.12"Th
Item Highlight	Strong Adhesion, Non-Hardening, Weather Resistance, Instant Seal for RV Roof Boat Repairs, Fits Most Surfaces, Easy Install
Item Thickness	3 millimeters
Manufacturer	LLP International Group
Material Type	Rubber
Model	BST233
Number of Items	1
Number of Packs	1
Other Special Features of the Product	Waterproof
Part Number	BST233
Recommended Uses For Product	Sealing, Airtight Reinforcement, Indoor and Outdoor Use, RV, Boat, Window, Door, Pipe, EPDM Roofing, Galvanized Metal Roofing, Retrofit, Mobile Home, Glass, Wood, Plastic, Metal
Size Name	1" Black
Surface Recommendation	Glass, Metal, Plastic, Wood
Tensile Strength	17 pounds_per_inch
UPC	791306423432
Unit Count	33 Feet
Upper Temperature Rating	98 °C
Water Resistance Level	Waterproof

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