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.

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LLPT Butyl Seal Putty Tape 1 Pack Black 3MM Thick x 25MM Wide x 10M Long

LLPT Butyl Seal Putty Tape 1 Pack Black 3MM Thick x 25MM Wide x 10M Long

Product ID: 265489350

Details

Brand
LLPT
Colour
1 X Black
Material
Rubber
Number of items
1

💧100% waterproof & airtight

🌡️Heat resistant up to 98°C

🛠️3.5mm thick durable seal

8930 kr

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Description

💪 Seal it tight, seal it right—never let a leak steal your spotlight!

ULTRA FLEXIBLE APPLICATION - Molds effortlessly to jagged, curved, or uneven surfaces for a flawless fit every time.
INDUSTRIAL GRADE DURABILITY - Synthetic rubber formula resists chemicals, moisture, oil, and extreme temperatures up to 98°C.
MESS FREE INSTANT ADHESION - Peel, press, and seal with no drying or hardening—perfect for quick, professional repairs.
SEAMLESS WEATHERPROOF SHIELD - Create airtight, waterproof seals on windows, doors, RVs, boats, and more—no leaks, no worries.
VERSATILE MULTI SURFACE COMPATIBILITY - Works on metal, wood, glass, plastic, and rubber—your all-in-one sealing solution.

LLPT Butyl Seal Putty Tape is a 3.5mm thick, 25mm wide, 10-meter long synthetic rubber tape designed for professional-grade waterproof and airtight sealing. Its high viscosity and elasticity ensure quick molding and shock absorption on diverse surfaces including metal, wood, glass, and plastic. Resistant to heat (up to 98°C), chemicals, moisture, and oil, this tape delivers mess-free, instant adhesion ideal for indoor and outdoor applications like RV repairs, window sealing, and roofing patches.

Specifications

ASIN	B0822FNHFQ
Adhesive Format	Wide Roll
Adhesive Location	Full Surface
Adhesive Material	Butyl
Adhesive Side Count	1
Best Sellers Rank	6,894 in DIY & Tools ( See Top 100 in DIY & Tools ) 11 in Butyl Tape
Brand	LLPT
Colour	1 X Black
Compatible Material	Metal, Plastic, Wood
Country Of Origin	China
Customer Reviews	4.5 4.5 out of 5 stars (2,783)
Included Components	1 Pack Butyl Seal Putty Tape
Item Dimensions L x W x Thickness	25W x 4Th millimetres
Item Highlight	Water Tight Seal Butyl Tape for Leak Proof RV Repair Window Glass Boat Sealing EPDM Roof Patching
Item Resistance	Chemical Resistant, Heat Resistant, Moisture Resistant
Item Thickness	3.5 Millimetres
Manufacturer	LLPT
Manufacturer Part Number	BST233
Material	Rubber
Model Number	BST233
Number of Items	1
Number of Packs	1
Other Special Features of the Product	Waterproof
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	25MM X 10M
Surface Recommendation	Wood, Metal, Glass, Plastic
Tensile Strength	17 Pounds Per Inch
UPC	791306423432
Unit Count	10.0 meter
Upper Temperature Rating	98 Degrees Celsius
Water Resistance Level	Waterproof

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8930 kr

Duties & taxes included

In stock

Sold byAmazon IcelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Iceland.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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