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 Tape Black 1 Inch x 33Ft Tight Seal for Leak Proof EPDM RV Repair Window Glass Boat Sealing Roof Pipe Patching(BST233)

LLPT Butyl Tape Black 1 Inch x 33Ft Tight Seal for Leak Proof EPDM RV Repair Window Glass Boat Sealing Roof Pipe Patching(BST233)

Product ID: 186460800

Details

Brand
LLPT
Color
Black
Material
Rubber
Number of Items
1

💧100% waterproof seal

🌡️-20°C to 98°C temp range

🛠️17 lbs/in tensile strength

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฿2738

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Sold byAmazon ThailandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💪 Seal like a pro, protect like a boss.

PRO GRADE DURABILITY - Premium synthetic rubber resists drying & hardening for long-lasting seals.
ALL SEASON RELIABILITY - Maintains pliability from freezing cold to scorching heat (-20°C to 98°C).
INSTANT WATERTIGHT BOND - Creates airtight, mess-free seals that block wind, water, dust, oil & corrosive chemicals.
VERSATILE SURFACE MASTERY - Adheres flawlessly to metal, wood, glass, plastic & more—even on jagged or curved surfaces.
PAINTABLE SEAMLESS FINISH - Customize your repair with a clean, professional look—no unsightly edges or residue.

LLPT Butyl Tape Black 1" x 33ft is a premium synthetic rubber sealing tape engineered for professional-grade waterproofing and airtight reinforcement. With a tensile strength of 17 lbs/in and a wide operating temperature range from -20°C to 98°C, it delivers durable, flexible seals on diverse surfaces including metal, wood, glass, and plastic. Its non-drying, non-hardening formula ensures long-lasting performance for RVs, boats, windows, roofs, pipes, and more—making it the go-to solution for millennial managers who demand reliability and a flawless finish.

Specifications

ASIN	B0822FNHFQ
Adhesive Format	tape
Adhesive Location	tape
Adhesive Side Count	1
Best Sellers Rank	#9,293 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #17 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 (3,413)
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 Thickness	3 Millimeters
Manufacturer	LLP International Group
Material Type	Rubber
Model	BST233
Number of Items	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	33.0 Feet
Upper Temperature Rating	98 Degrees Celsius
Water Resistance Level	Waterproof

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