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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 | #1,452 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 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 2,764 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 |
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
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.
A**R
Works well
Works well, used on camper windows and I am sure there will be no leaks.
M**N
Amazon finally got it right with this one
Product was good
M**E
You'll find yourself in a sticky situation!
If your looking for something that sticks and lasts a long time THIS butyl tape is the answer to all those problems! It's thick but yet plyable kind of like playdough it's waterproof and heat proof and man does it LAST FOREVER! Just make sure you don't get it anywhere you don't want because seriously it LASTS FOREVER lol and it's not just good for rv use we have used it in many different ways from household to automotive to arts and crafts!
A**R
works great on camper awnings
worked great for installing my slide out awnings... time will tell how it holds up but no issues during install and it feels like good quality stuff... no issues with packaging or melting like I saw in other reviews.. mine is fine
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.
Trustpilot
1 week ago
3 weeks ago