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Nashua 361-11

Nashua 361-11 Waterproofing Repair Tape

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6 Question & Answers
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    View "Full Pricing Table" below for detailed pricing and additional sizes!
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    2 in. x 32.8 ft.
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Before ordering, please read the "Product Description & Specs" tab content for more information about this item.

Product Description

Polyken/Nashua 361-11 Waterproofing Repair Tape is a tape with an aluminum foil backing/carrier which is coated on one side with a permanent butyl rubber adhesive. The tape forms a permanent seal with excellent adhesion to all surfaces. Nashua 361-11 is also extremely conformable and resistant to cold, heat, water, and sunlight. Its silver foil backing is paintable which helps match surfaces. Typically used for indoor and outdoor sealing and repair of gutters, roof alleys, eaves, hips, and ridges. Nashua 361-11 Waterproofing Repair Tape can also repair seams and seal leaks, rips, and tears in pipes, hoses and in metal panels of trailers, shipping containers, and metal buildings.

We label the tape as Polyken/Nashua 361-11 in the product description because they are co-brands owned by Berry Plastics (the parent company of Nashua, Polyken, Ludlow, Patco, etc. tape brands). The core of Polyken/Nashua 361-11 Waterproofing Repair Tape can be labeled as either Polyken or Nashua depending on which cut rolls we get from the manufacturing production run. Made in the U.S.


Technical Information

Nashua 361-11 Waterproofing Repair Tape
  • Standards Met: UL723
  • Carrier/Backing: aluminum foil
  • Adhesive: butyl rubber   How are adhesives different?
  • Release Liner: LDPE (low-density polyethylene) blue film
  • Thickness: 11 mils (carrier, adhesive) 9 mils (adhesive) 2 mils (carrier)   What is mil thickness?
  • Adhesion: 75 ounces per inch (to stainless steel test panel)
  • Tensile Strength: 20 pounds per inch (longitudinal)
  • Service/Operating Temperature: 40°F to 200°F
  • Core: 3" diameter
Note: Specifications are those given by manufacturers and are not tested for accuracy.

Alert Roll Sizes/Widths

Please note that tape rolls are NOT guaranteed to be splice-free. Tape rolls are typically cut to standard tape industry metric-cut sizes - or approx 5% narrower than the nominal size (i.e. 24mm per 1-inch of nominal width ordered).

Download Datasheets

Download Datasheets

The following downloads are available for this product:

Download Product Data Sheet

361-11 Standard sizes


2 in. x 32.8 ft.

Actual Size: 48mm x 10m

361-11/ 21024

Single Roll (1-23 Rolls)

1 - 4 Cases (24-119 Rolls)

5 - 9 Cases (120-239 Rolls)

10+ Cases (>= 240 Rolls)


a 7% discount

a 8% discount

a 10% discount





Nominal Tape Widths vs Actual Widths

Nominal vs. Actual Widths Zoom In

Tape rolls are cut to standard tape industry metric widths of approx. 24mm per 1-inch of nominal width ordered. As a result ACTUAL tape widths are normally 5% narrower than the NOMINAL width shown in inches. Examples:

  • 1" Nominal width = 15/16" (24mm) Actual width
  • 2" Nominal width = 1-7/8" (48mm) Actual width
  • 3" Nominal width = 2-13/16" (72mm) Actual width

Note that tape rolls are NOT guaranteed to be splice-free.

Question & Answers

[ viewing questions 1 through 6 of 6 total ]
mark c. Mar 30, 2020
QUESTION: can this be used to repair an RV hot water tank leak
ANSWER: For a hot water tank leak I would probably recommend something with thicker adhesive. Nashua 360-45 has 43 mils of adhesive and operates in temperatures up to 300F while the 361-11 product only has 9 mils of adhesive and supports temperatures up to 200F. Thank you.
Jayant Jul 11, 2018
QUESTION: What is the dimension/size of the box for the case?
ANSWER: The approximate weight of a case would be 17 pounds. The dimensions would be 9-1/2” x 14" x 8-1/4". Thank you.
Customer Jul 16, 2017
QUESTION: Can I use this on an aluminum shed roof to help with leaks?
ANSWER: Yes. I think it would work for that purpose.
Customer Jun 20, 2017
QUESTION: I have leak in the hose for my pool. Can I use this to seal it?
ANSWER: I doubt it. It's good for patching something that doesn't have any pressure on it. 
Customer May 16, 2017
QUESTION: We can use this product while water is licking?
ANSWER: Yes you can.

User Reviews

Nashua 361-11 Waterproofing Repair Tape
Made in the USA
hot melt rubber (synthetic)
Offers the widest range of application flexibility available. Exhibits excellent processing performance whether manually or automatically applied. Has superior tensile strength, adhesion properties and holding force which ensures consistent, reliable seals. Hot melt adhesive will bond faster to a surface which is referred to as quick-grab or quick-stick. It typically has higher tack (will feel stickier to the touch), but is also softer. It has lower heat resistance, shear resistance, and sometimes UV resistance than an acrylic adhesive. NOTE: it is called hot melt because the adhesive is applied hot by the manufacturer and then hardens as it cools (you do not need to apply heat to the tape yourself).
natural rubber
Properties are similar to that of hot melt rubber, but natural rubber often holds where other adhesives won't (recycled fibers, dust, cold, heat and heavy loads). It provides good overall adhesion and moisture resistance.
Offer excellent performance, especially for applications in temperatures less than 40°F and greater then 120°F. It provides excellent clarity, has high shear strength, is usually more permanent/durable even when exposed to moisture, and it ages well over extended periods in fluorescent and sunlight. Since it remains clear for the life of the application and does not yellow over time it is ideal for applications such as sealing white cartons. While it has good initial adhesion it does take 24-48 hours to cure and to achieve its maximum bond strength (has gradual adhesion buildup). Another difference between hot melt rubber and acrylic adhesive is if you fold tape over making the two adhesive sides touch the acrylic adhesive will remain attached to the carrier (e.g. paper, film) while a hot melt adhesive will stick to itself and pull off of the carrier. It is the best choice for clarity, UV resistance and aging characteristics.
Is great for extreme temperature applications since silicone adhesive can work in continuous operating temperatures from -100°F to 500°F. They also exhibit good chemical resistance, retain electrical properties, and remove cleanly with little or no residue.
zinc oxide
Zinc oxide based adhesive formula is a skin-friendly adhesive which is commonly used on sports medicine tapes.
Thickness, AKA caliper or gauge, refers to the distance from one surface of a tape backing, or adhesive, to the other.
1 mil = 1/1000 of an inch
Examples: 1/16 inch = 62.5 mils; 1/32 inch = 31.25 mils
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