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🔧 Seal smarter, not harder — the ultimate tape for pros who demand perfection.
XFasten Butyl Sealing Tape is a high-performance, black EDPM rubber tape measuring 1/8” thick by 3/4” wide and 30 feet long. Rated for 350 PSI tensile strength and resistant to water, chemicals, and temperatures up to 290°F, it delivers a reliable, mess-free, watertight seal across multiple surfaces including metal, wood, plastic, and concrete. Trusted by thousands with a 4.7-star rating, it’s the go-to solution for RV, marine, plumbing, and construction sealing needs.
| ASIN | B06WLQ3WLS |
| Adhesive Format | Tape |
| Adhesive Location | One side |
| Adhesive Side Count | 2 |
| Best Sellers Rank | #1,678 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3 in Butyl Tape |
| Brand | XFasten |
| Brand Name | XFasten |
| Color | Black |
| Compatible Material | Metal, Rubber, Plastic, Pvc, Glass, Wood, Polycarbonate |
| Customer Reviews | 4.7 out of 5 stars 2,791 Reviews |
| Foil Thickness | 0.13 Inches |
| Included Components | 1/8 Inch Thick Butyl Tape, Adhesive Backing |
| Item Dimensions L x W x Thickness | 0.75"L x 0.75"W x 0.13"Th |
| Item Resistance | waterproof, chemical resistant, leak resistant |
| Item Thickness | 0.13 Inches |
| Item Weight | 2.4 Ounces |
| Manufacturer | XFasten |
| Material | Butyl Rubber |
| Material Type | Butyl Rubber |
| Model | BST3430 |
| Number of Items | 1 |
| Other Special Features of the Product | Adjustable, Mess Free |
| Part Number | BST3430 |
| Recommended Uses For Product | Electrical, Indoor, Outdoor, Plumbing |
| Size Name | 1/8" x 3/4" x 30', Single Pack |
| Special Feature | Adjustable, Mess Free |
| Surface Recommendation | Concrete, Metal, Plastic, Wood |
| Tensile Strength | 350 Pounds Per Square Inch |
| UPC | 602401715660 |
| Unit Count | 30.0 Feet |
| Upper Temperature Rating | 290 Degrees Fahrenheit |
| Warranty Description | Manufacturer warranty for 90 days from date of purchase |
| Water Resistance Level | Waterproof |
B**B
Great for sealing and adhesion
Purchased to put between fenders and body of an old truck I am rebuilding. I have also used the sealing tape to put between sheet metal components that get screwed together to seal and eliminate potential squeaks. The tape works great, seals very well, hope I don't have to take anything apart. Per the instructions, it's easiest to work with the tape when the tape is cool, otherwise it gets really sticky. Great product for its intended use.
A**.
Nice and easy to use. Works well
It’s as described. Pretty pliable and soft but not like putty. Stretches easily it should work for your needs were it is required for this product. Metal to metal on my old car works fine. Weather strip Chanel tracks ect. Came in a nice roll. Packing was very nice. Easy to use product. Cool area I used it in around 60 degrees. No mess.
B**N
If your unsure. It's definitely worth it
About this to install a fan in the bathroom of my camper. I instantly tested to see if it was waterproof before I added my Henry's tropicool sealant on top. It worked perfect I left the water hose on the roof with water hitting Butly tape directly no water penetration whatsoever before I even put the screws to tighten it down this stuff is amazing. It's incredibly sticky and the thickness was exactly as described
M**N
Amazon finally got it right with this one
Product was good
D**H
Easy to use and seals well, great product!
Great product and flexible enough to do the sealant jobs I needed. I ought for my RV to install some additional solar panels and place under my slam lock catch that had a leak. I can already see a few other places I can use it so imagine it will just stay in my camper for some emergency situations.
G**E
works as expected
as listed this stuff is amazing
R**N
sticky leak proof stuff
very good and strong sealant tape for vents and anything you want to keep water out very sticky i have used butyl tape on many things and none leaked.highly recommended.
R**L
Excellent product to use n marine environments
Excellent waterproof product for sealing safety glass into stainless steel frames for boat portals. Stays soft and pliable in very cold temps. I tested this down to -10 F and still extremely adhesive and pliable. Easy to work with.
S**E
Best Ever
Bought this butyl tape to reinstall factory glass in my van doors and a new roof vent. Stop using silicone, this is the right product to use. Easy and water tight. As long as you know what you are doing.
C**T
Good Product
Quick delivery, item as described, happy
W**B
Easy to manipulate
Works well, I used to seal the weather guards back up in my car.
G**O
Très utile pour l’étanchéite
Très utile pour l’installation de fenêtres et portes de VR ou remorques fermées
J**N
Handy to have
awesome product
Trustpilot
3 days ago
3 weeks ago