McNett Seam Sure Seam Sealer

Item # MCN351   |   Customer Rating: Read 19 reviews  |    Bookmark and Share

Price: $5.99

In Stock! Ships Monday, April 27.

Key Features

  • 2 oz. size is enough for most tents
  • Handy applicator brush

Product Highlights

Seam Sure Water Based Seam Sealer is a fast drying, water based urethane formula designed for sealing sewn seams on synthetic fabrics and breathable laminates.

Seam Sure dries to a clear, flexible, long lasting film with a nearly invisible non-gloss finish.

Ideal for waterproofing tents, packs, rainwear, garments, tarps and more. Seamsure flexes with the fabric insuring waterproofing even in cold temperatures and high wind conditions.

The unique brush applicator allows the user to easily apply Seam Sure into needle holes, sewn joints, corners and under lap-felled and folded seams.

McNett part number: 117494

Product Reviews

Average Customer Rating:
McNett Seam Sure Seam Sealer

Average customer rating:
Number of reviews: 19

Individual Customer Reviews:

Displaying Reviews 1-3 of 19 | Read All Reviews

  • Anonymous Backcountry Edge Customer

    Likes: Works as intended, easy to apply

    Dislikes: none

  • Lisa S. Pickens SC

    Likes: The product seems to work well to keep out water. My tent has been out in the rain twice since I seamed sealed it and I've had no leaks.

    Dislikes: Messy to apply, difficult to put on the right amount. Lots of dripping and excess product during application.

  • . East Greenbush NY

    Likes: Worked well to seam inside of tent.

    Dislikes: Applicator is a little difficult to use.

  • david g. sedona AZ

    Likes: essental tookit item

    Dislikes: na

  • Anonymous Backcountry Edge Customer

    Likes: Bought this to seal the seams in a brand new tent. The sealant is easy to use, its built in brush provides a "somewhat" easy to use applicator and the fumes aren't too bad. If you don't like the applicator you can use a small paint brush for easy application.

    Dislikes: Nothing. It works as promised.

  • Jim C. Syracuse UT

    Likes: Even though a Big Agnes tent, like the Big House 4 that I recently purchased, does not need the seams sealed there are times, such as after lots of use, when it is a good idea to do them over again.

    McNett Products are top notch for assisting one to keep their purchases in good order.

    Dislikes: Nothing - nada!

  • Jim C. Syracuse UT

    Likes: All of the products from McNett and Nikwax are essential for adding to the accesory pack that you keep with your tent. While it may not be needed essentially, it is a good idea to run this along the seams to fill any holes that cropped up in sewing.

    Dislikes: Not enough product in the package...

  • Matt S. Gainesville FL

    Likes: Easy to use
    Works as described

    Dislikes: No dislikes

  • Sean S. Cincinnati OH

    Likes: Kept the tent reasonably dry. Easy to use.

    Dislikes: Water got in during a really wild series of thunderstorms. 60 mph winds and a couple inches of water will do that. I'll have to use quite a few more applications to make it really water tight.

  • Josh S. Burlington NC

    Likes: Easy to use

    Dislikes: Nothing

  • Paul H. Wellsboro PA

    Likes: good brush applicator head, works as expected

    Dislikes: none

  • Michael D. G. Phoenix, AZ

    Likes: This stuff works great but prep before use is always the key with any thing.

    Dislikes: "O"

  • Daniel D. Roseboro NC

    Likes: It did exactly what it was supposed to do.

    Dislikes: nothing to dislike.

  • Michael J. Kissimmee FL

    Likes: Never had to use it

    Dislikes: Not applicable

  • John M. Louisville IL

    Likes: easy to apply, seems to fill tiny holes

    Dislikes: nothing

  • Anonymous Backcountry Edge Customer

    Likes: Seems to keep tent sealed well, only used once so far so good!

    Dislikes: nothing

  • Daniel B. Colorado Springs CO

    Likes: This product works as stated. seals seams effectively.

    Dislikes: Applicator brush is a bit messy. The product is thin and drips off the brush easily.

  • Anonymous Backcountry Edge Customer

    Likes: Seals easily

    Dislikes: nothing


    Likes: Works well. Easy to apply

    Dislikes: Nothing negative to say about product

Read All Reviews