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DAP 688 Purpose 100% Silicone Raw Building Material, 2.8 FL OZ, Clear, 2

4.6 4.6 out of 5 stars 1,014 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Silicone Caulk by DAP

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Available at a lower price from other sellers that may not offer free Prime shipping.
2.8 FL OZ

Purchase options and add-ons

Brand DAP
Material Silicone
Compatible Material Rubber
Item Form Liquid
Special Feature Waterproof

About this item

  • Made in United States

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$12.94 ($4.62/Fl Oz)
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$10.15 ($24.17/Ounce)
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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 3.9 x 3.9 x 8 inches; 3.2 ounces
  • Item model number ‏ : ‎ 688
  • Department ‏ : ‎ Unisex-Adult
  • Date First Available ‏ : ‎ September 14, 2004
  • Manufacturer ‏ : ‎ Dap
  • ASIN ‏ : ‎ B000KE4PBQ
  • Customer Reviews:
    4.6 4.6 out of 5 stars 1,014 ratings

Product Description

Product Description

Use to build or repair aquariums. Provides a waterproof and watertight seal. Harmless to fresh and saltwater fish when cured. Will not crack or shrink. Meets ASTM Specification C290, Class 25, Type S, Grade NS.

From the Manufacturer

Long-lasting 100% silicone rubber helps build and repair aquariums. Provides a waterproof, watertight seal. Stays flexible. Won't crack or shrink. Non-toxic to fresh and saltwater fish when cured.


From the manufacturer

DAP All-Purpose 100% Silicone Adhesive Sealant

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  • Interior/exterior
  • Multi-material adhesion
  • Flexible bond won't crack or shrink
  • Safe for incidental food contact
  • 100% waterproof bond
  • Flexible

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Customer reviews

4.6 out of 5 stars
4.6 out of 5
1,014 global ratings

Customers say

Customers like the performance, adhesion, quality and safety of the bonding adhesives. For example, they mention it works excellent, is stable and holds strong. Some appreciate the food and aquarium safe properties. That said, they are satisfied with ease of use. That being said, opinions are mixed on seal and clarity.

AI-generated from the text of customer reviews

96 customers mention80 positive16 negative

Customers like the performance of the bonding adhesive. For example, they mention it works excellent, is very pleased with the results, and bonds well. Some say that it's messy and hard to work with, but can be easily cleaned up with a razor knife. Overall, most are happy with the product's performance and recommend it to others.

"...And it worked great!!! If you are looking for something you can use inside, try this. Great product." Read more

"...Now he drinks his hot coffee from it every day again. Worked exactly as we had hoped." Read more

"This works really well. Tacky enough to hold pieces together while curing. Easy to reposition pieces to get the right fit." Read more

"...I followed the directions and I'm very pleased with the results. I would use it again. It was more than enough for my project." Read more

81 customers mention59 positive22 negative

Customers like the adhesion of the bonding adhesive. For example, they mention it's very firm, holds strong, and stable. Some say that the repair has held great. That said, most are happy with the product's adhesiveness.

"Easy to use, no mess. Bonded quickly. And able to use bowl as glue is non-toxic." Read more

"...It's visible that it was fixed, but it is nice and stable and usable and holding fine...." Read more

"...Process was not very hard to figure out, and the plate has been fine ever since. Goes through the microwave, dish washer, everything...." Read more

"...DAP needs to put a new better top on this tube, as this one invariably splits...." Read more

31 customers mention28 positive3 negative

Customers are satisfied with the quality of the bonding adhesive. They mention it's a great product for crafts involving securing stones, gems, and other items. Some say that the product is great for aquarium projects.

"...It fixed it right up. It's visible that it was fixed, but it is nice and stable and usable and holding fine...." Read more

"...The handmade pour over is also sturdy and back in one piece. Excellent product." Read more

"This product is GREAT for aquarium projects, if you are iffy as of what sealant to get for your projects this one i truly recommend...." Read more

"...It smells obnoxiously of vinegar but it does the job. It will make a good, non-toxic, water-proof seal...." Read more

26 customers mention26 positive0 negative

Customers are satisfied with the safety of the bonding adhesive. They mention that it is non-toxic, pet and food friendly. Some say that it works well and is aquarium and food safe.

"...Bonded quickly. And able to use bowl as glue is non-toxic." Read more

"This could not be easier. It says FOOD SAFE on the front of the package. I had an acrylic serving dish that needed a fix...." Read more

"...This was easy to work with. I appreciate that they certify it to be food safe." Read more

"I was sold on this sealant being listed as safe for contact with food...." Read more

24 customers mention20 positive4 negative

Customers find the bonding adhesives easy to use. They say it's very easy to apply, needs little time to set, and is easy to reposition pieces to get the right fit.

"...Tacky enough to hold pieces together while curing. Easy to reposition pieces to get the right fit." Read more

"Easy to use, no mess. Bonded quickly. And able to use bowl as glue is non-toxic." Read more

"It was very easy to work with this product...." Read more

"Used this to fix a broken plate. Process was not very hard to figure out, and the plate has been fine ever since...." Read more

44 customers mention30 positive14 negative

Customers have mixed opinions about the seal. Some say that it works well and stops leaks, while others say that when it cured it exploded all over the place.

"...No water is leaking through the repair- and the vessel's primary purpose is to dispense beverages...." Read more

"...and it held together this whole time filled with water with no leaks!..." Read more

"...Unfortunately, it started leaking...." Read more

"...So far it’s held up.. it’s not pretty but it sealed the leak...." Read more

18 customers mention10 positive8 negative

Customers are mixed about the clarity of the bonding adhesive. Some mention it's clear, odorless, and watertight with strong adhesion. They say it dries quickly, while others say it takes a couple weeks to dry.

"...I liked that the drying time was slightly delayed, as repairing a broken dish requires patience and precision...." Read more

"...Update....This stuff dries really really really quickly...." Read more

"...This is my go-to solution. It is clear and far stronger than expected...." Read more

"...I only gave it four instead of five stars because it seems to dry up and clog the tube opening after every use. It's very difficult to dig out." Read more

26 customers mention3 positive23 negative

Customers are dissatisfied with the durability of the bonding adhesive. They mention that the tube broke on the first use, the bottle broke, and it fell apart in no time. Customers also report that the nozzle breaks off pretty quickly.

"...My only real gripe is the container, which easily bursts. Be gentle in pushing it out...." Read more

"...It definitely worked, but I knocked a star off because the bottom seam of the tube opened and the sealant exploded all over the place...." Read more

"...Being forewarned, I've managed to avoid that but could not avoid the cap splitting on the second or third use...." Read more

"...way to recap this, unless you're using it all in one go, this tube becomes useless.3. The fumes!..." Read more

top glass-to-metal adhesive
5 Stars
top glass-to-metal adhesive
I am a sculptor and I use Dap to hold art-glass onto steel ringsI require a no-nonsense adhesive and this is reliably strong
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Top reviews from the United States

Reviewed in the United States on November 25, 2023
Size: 2.8 FL OZVerified Purchase
2 people found this helpful
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Reviewed in the United States on February 13, 2024
Size: 2.8 FL OZVerified Purchase
One person found this helpful
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Reviewed in the United States on February 19, 2024
Size: 2.8 FL OZVerified Purchase
One person found this helpful
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Reviewed in the United States on January 29, 2024
Size: 2.8 FL OZVerified Purchase
One person found this helpful
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Reviewed in the United States on February 10, 2016
Size: 2.8 FL OZVerified Purchase
13 people found this helpful
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Reviewed in the United States on March 11, 2024
Size: 2.8 FL OZVerified Purchase
Reviewed in the United States on April 20, 2023
Size: 2.8 FL OZVerified Purchase
20 people found this helpful
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Reviewed in the United States on November 29, 2023
Size: 2.8 FL OZVerified Purchase

Top reviews from other countries

KPA
5.0 out of 5 stars Worked great on broken dish
Reviewed in Canada on July 31, 2019
Size: 2.8 FL OZVerified Purchase
3 people found this helpful
Report
Mila
5.0 out of 5 stars Very good product
Reviewed in Germany on June 24, 2016
Size: 2.8 FL OZVerified Purchase
trubble007
5.0 out of 5 stars Five Stars
Reviewed in the United Kingdom on September 1, 2015
Size: 2.8 FL OZVerified Purchase
Sayyad Glassford
5.0 out of 5 stars Good Silicone Sealant
Reviewed in Canada on June 13, 2021
Size: 2.8 FL OZVerified Purchase
One person found this helpful
Report
Jupiter9
4.0 out of 5 stars All good so far
Reviewed in the United Kingdom on September 8, 2015
Size: 2.8 FL OZVerified Purchase