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Internet # 316357755

Model # 000309

Store SKU # 1006232468

2.8 oz. Silicone Superior Watertight Drainage Sealant, Black

$11.98
  • Ideal for sealing channel drain end cap
  • Premium sealant will remain elastic in nature for 50 years
  • Strong, durable adhesion to multiple surfaces and 100% waterproof
  • View More Details

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Product Details

About This Product

RELN Drainage Sealant is 100% silicone and designed to be used with Channel Drains, Catch Basins and Sewer and Drainpipe to prevent leaks by creating watertight connections at each drainage assembly point. It is also designed to work on a variety of other exterior weather proofing applications and has a superior adhesion to most construction materials. For greater lamination to various plastics, we recommend to lightly sand areas where RELN Sealant will be applied. Once cured, it is a flexible form with a 50-year durability.

Highlights

  • Ideal for sealing and securing in place the storm drain and or storm mate end cap to a length of channel drain
  • Water-resistant before, during and after cure
  • Excellent adhesion to both porous and non-porous substrates
  • Bonds to: galvanized steel, aluminum, steel, vinyl, plastics, masonry, stone, concrete, ceramics and PVC
  • 50-year durability
  • Non-sag/non-slumping
  • For use with channel drains, catch basins and sewer drain pipe
  • Cure time - Sections up to 3.2 mm (1/8") thick become rubbery solids in 24 hours at 25°C (77°F) at 50% relative humidity.
  • Tack free after 25 minutes.
  • Return Policy

Product Information

Internet # 316357755

Model # 000309

Store SKU # 1006232468

Additional Resources

Shop All RELN

Specifications

Dimensions

Max. Compatible Pipe Size (In.)

No Compatible Pipe Size

Min. Compatible Pipe Size (In.)

No Compatible Pipe Size

Product Depth (in.)

1.5 in

Product Length (in.)

7 in

Product Width (in.)

1.5 in

Details

Color/Finish

Black

Compatible Area of Use

Downspout Runoff, Driveway, Pool Deck, Yard

Material

Silicone

Maximum Working Temperature (F)

122

Minimum working temperature (F)

-20

Pack Size

1

Pipe or Fitting Product Type

Accessory

Product Weight (lb.)

.34 lb

Returnable

90-Day

Warranty / Certifications

Manufacturer Warranty

30 days

Questions & Answers

Can this be used to seat a hole in a PVC pipe? Inside PVC PIPE ?
ByJul 20, 2026
1 Answer | 
Answer This Question

Hi RAYDEL, depending on the size of the hole (1/8” to 1/4”) diameter size - smaller hole size would be ideal. This sealant will definitely work!

By|Jul 20, 2026


    WILL THIS SEAL CPCV LEAKS?
    ByApr 28, 2026
    1 Answer | 
    Answer This Question

    Hi CPCV, The RELN sealant will certainly provide lamination and a secure connection to CPCV pipe

    By|Apr 29, 2026


      Can this product be used to seal around a small hole in hdpe corregated drain pipe where a landscape lighting wire has been threaded?
      ByOct 3, 2025
      1 Answer | 
      Answer This Question

      Hi Brian, Most definitely! This drainage sealant is ideal for your application and it will ensure a watertight connection

      By|Oct 9, 2025


        Is this product mildew proof and can it be used on painted bathroom walls at the showerhead?
        BySep 26, 2025
        1 Answer | 
        Answer This Question

        Hi Susan, Yes, this can used in the application you have indicated, and is mildew proof. Kindly note the silicone colour is black.

        By|Sep 26, 2025


          Can this be used with a polypropylene channel drain?
          ByAug 30, 2025
          1 Answer | 
          Answer This Question

          Hi JLND, Yes, this sealant can be used with a polypropylene channel drain. We recommend, prior to applying the sealant, lightly scuff up the plastic with sandpaper. This will allow a greater lamination for the sealant and plastic. For any additional questions, please contact us directly at 1-855-215-6858

          By|Oct 25, 2025

            (1)

            After applying this to the bottom of my kitchen sink drain to form a bond where it connects to the sink, how long will I need to wait to use my sink?
            ByAug 21, 2025
            1 Answer | 
            Answer This Question

            Hi Sklein, After 25 minutes, you can continue with your project. To cure fully, 24 hours is required.

            By|Aug 22, 2025


              is this uv resistant.
              ByAug 5, 2024
              1 Answer | 
              Answer This Question

              Hi bigO, Yes, the RELN Drainage Sealant is UV resistant. For any additional questions along the way, please feel free to contact our toll-free helpline at 1-855-215-6858

              By|Aug 6, 2024


                Can this be used to seal a backflow preventer inside a 2” cast iron floor drain?
                ByJun 28, 2024
                1 Answer | 
                Answer This Question

                Hi Kappa, our sealant is designed for outdoor uses and purposes. It will definitely bond to cast iron and various plastic materials.

                By|Jul 1, 2024


                  Viewing 1-8 of 18

                  Customer Reviews

                  4.3 out of 5

                  • 4.3 out of 45 reviews
                  • 96% recommend this product
                  Filter by:
                  Showing 1-10 of 45 reviews
                  It seems to work.
                  I did 20 feet with a corner and had enough. It is very sticky and hard to get off your hands.
                  by
                  • Verified Purchase
                  • Recommended
                  The Reln sealant comes with clear and easy to understand instructions. It has a plastic twist off...
                  The Reln sealant comes with clear and easy to understand instructions. It has a plastic twist off cap, and I used a carpet cutter to cut the applicator. The resin squeezes out with ease and I had no issues applying it to the plastic drain tube. If there were any gaps, the sealant filled it out easily. The sealant is a little messy, but cleanup is super easy. Overall, the sealant did a wonderful job in sealing the drainpipe. So far we haven’t had any leaks.
                  by
                  • Recommended
                  I received the RELN Silicone 2.8 oz. Black Superior Watertight Drainage Sealant for free to revie...
                  I received the RELN Silicone 2.8 oz. Black Superior Watertight Drainage Sealant for free to review The RELN Drainage Sealant is 100% silicone and designed to be used with Channel Drains, Catch Basins and Sewer and Drainpipe to prevent leaks by creating watertight connections at each drainage assembly point. It is also designed to work on a variety of other exterior weather proofing applications and has a superior adhesion to most construction materials. I plan to use it for exterior application to seal gaps around the house where caulking has failed. Hopefully this will work better as it says - once cured, it is a flexible form with a 50-year durability.
                  by
                  • Recommended
                  I've been looking for a black colored 100% Silicone caulk & adhesive and now I have found it. Eve...
                  I've been looking for a black colored 100% Silicone caulk & adhesive and now I have found it. Even though this product is designed to use on channel drains & sewer pipe I wanted to use this product on a portable solar heat vent that I use in my truck. The flanges on the top of this heat vent cracked from using it too many times in the hot sun but this product sealed the crack very efficiently. Also I wanted to check if this product can be used in a fountain or spa fully submerged underwater. I called the manufacturer and explained how I wanted to use it and got great customer service. The rep got all the info & wanted to check with his technical people & he called back in less than 10 minutes with the answer that it can be submerged underwater depending on the amount of heat - no higher than 200 degrees I think.
                  by
                  • Recommended
                  We were hoping to use this product to ensure some of the drains & similar mechanisms around the h...
                  We were hoping to use this product to ensure some of the drains & similar mechanisms around the house were properly sealed. Prior to using it on those items, we tested it on the pipe you see in the image where we had a minor tear we wanted to reseal. The product was easy to use and place. Once in place, it stuck and seemed as though it was sealed. Dry time was quick, too. We tested with some water, and it was good to go! The product claims to last for 50+ years. While I can't attest to that, it seems, at least for the time being, it will keep the product properly sealed. Since the test went well, we definitely intend to use on other items.
                  by
                  • Recommended
                  1 found this review helpful
                  I guess the first question is how does this compare to the big name silicone? well seems to be ev...
                  I guess the first question is how does this compare to the big name silicone? well seems to be every bit as good. The product consistency was good and the skinning was fairly quick as in about 15 minutes. The product was stiff enough to hold a piece if plastic upright. I haven't tried it as a glue as of yet, like to hang tiles or anything, but it did seal and waterproof a seam in a bucket A good alternative to the big name.
                  by
                  • Recommended
                  I ordered this thinking I would use it like caulk for a sink install... not the right application...
                  I ordered this thinking I would use it like caulk for a sink install... not the right application. This is intended for channel drains, perhaps like around a swimming pool? It also lists catch basins and sewer or drain pipes on the label as well as a 50 year service claim. Having read all the labeling I still considered trying it on the sink install but with a call to customer service I was unable to determine if it was safe to use where wster would be in contact with dishes etc...
                  by
                  • Recommended
                  The Reln Silicone Superior Watertight Drainage Sealant, Black, was super easy to use. I had devel...
                  The Reln Silicone Superior Watertight Drainage Sealant, Black, was super easy to use. I had developed a small leak under the sink and wanted a quick and simple repair. I put on some latex gloves and got to work. I made one small cut on the nozzle and squeezed out a small amount. I smeared it along the line of the pipe connection that was leaking and left it to dry. Problem solved in minutes! I believe it will be a long lasting repair. There isn't much in the way of instructions for use, but I guess there doesn't have to be.
                  by
                  • Recommended
                  1 found this review helpful
                  This caulk is a very dark black and matches up well with the drain boxes I put under my downspout...
                  This caulk is a very dark black and matches up well with the drain boxes I put under my downspouts. Not that it needed to match because where I used it is now buried! The tip of the tube is pre-marked to show you where to cut it so you get a nice, angled tip for applying it evenly. The amount in the tube was more than needed for my project but the cap should keep it from drying out.
                  by
                  • Recommended
                  Finding new ways to use familiar products is a good way to expand do-it-yourself skills and solve problem areas around the house. While silicone is the item of choice to stop small leaks in pipe connections under sinks, it can also be used in other ways. The cover atop our patio’s gazebo is showing wear from intense sunlight, so I squeezed a small amount of RELN silicone to fill in the worn spots and prevent rain leaking through when we enjoy sitting on the patio.
                  by
                  • Recommended
                  Showing 1-10 of 45 reviews

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                  Product Snapshot

                  Ideal for sealing channel drains and catch basins, ensuring watertight connections with 50-year durability.
                  Ideal for medium-duty traffic, this 2 ft. gray plastic channel drain grate ensures efficient water runoff and easy maintenance.
                  Ideal for directing downspout runoff, this adapter creates versatile drain configurations for driveways, pool decks, and walkways.
                  Ideal for customers who want a watertight connection for mini channel drains, ensuring proper water release.

                  Flow Capacity

                  51 GPM per ft.

                  Channel Width

                  4.13 in.
                  4.75 in.
                  3.5 in.

                  Load Class

                  NDS Class B (up to 175 psi)

                  Grate Material

                  High-density polyethylene (HDPE)
                  Plastic
                  Polyvinyl chloride (PVC)

                  UV Resistance