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DAP

12 Pack Dap 18300 DYNAFLEX 230 Premium Indoor/Outdoor Sealant - White 10.1-oz Cartridge (18275)

  • Based on 684 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Oct 21 – Oct 22
Order within 18 minutes
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Features

  • White DYNAFLEX 230 Premium Elastomeric Sealant 10.1 oz
  • DAP's most advanced latex sealant technology.
  • Provides excellent adhesion and a watertight, weatherproof seal.
  • Cured caulk. Interior/exterior use.
  • Federal Spec. TT-S-00230C, Type II, Class A, ASTM Spec. C 920, Class 25

Description

12 Pack Dap 18300 DYNAFLEX 230 Premium Indoor/Outdoor Sealant - White 10.1-oz Cartridge (18275)

Material: Silicone Tough latex


Brand: DAP


Style: Compact


Item Weight: 10.1 ounces


Item dimensions L x W x H: 8.25 x 6.25 x 12 inches


Brand Name: DAP


Number of Packs: 12


Unit Count: 121.2 Fluid Ounces


Number of Items: 1


Item Type Name: 12 Pack Dap 18300 DYNAFLEX 230 Premium Indoor/Outdoor Sealant - White 10.1-oz Cartridge (18275)


Manufacturer: Dap Inc


Model: 12 Pack Dap 18300 DYNAFLEX 230 Premium I


Part Number: 18300


Item Weight: 10.1 ounces


Item Dimensions: 8.25 x 6.25 x 12 inches


Water Resistance Level: Waterproof


Item Form: Paste


Compatible Material: Rubber


Style Name: Compact


Color: White


Surface Recommendation: Window, Door


Material Type: Silicone Tough latex


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Oct 21 – Oct 22

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • My go to Caulk
Simply the best Caulk for wood working and home repair. The only thing better is Lexel, but that can be a beast to work with and is very expensive. I have tried many DAP models and always come back to the 230 as the best for adhesion to wood surfaces and drywall. Plus it has low shrinkage The white color also holds up for years and does not yellow like some other brands. Easy to wash off with water and definitely keeps water out once it dries. ... show more
Reviewed in the United States on September 7, 2026 by Robbyg
    • Excellent caulk for trim and painted finishes.
This was recommended by a professional painter in the building industry. Great for caulking trim, and painted built ins — indoor or outdoor use. Flexible, soft, pliable, and easy cleanup. Less expensive in a bulk pack from Amazon than the big box stores. Ordered more to keep on hand for easy project finishing while we work on our house remodel. Highly recommend. ... show more
Reviewed in the United States on September 8, 2026 by Amazon Customer
    • I didn't get what I ordered. But it was made 100% good.
Review Image by Laurie B
I had an issue with my order, contacted the seller and they made it 100% right. I would use this seller again. In today's time anyone that stands up and does the right thing is hard to find. Great buy.
Reviewed in the United States on June 3, 2026 by Laurie B
    • Great high tech caulking at a reasonable price!
I have used approximately 15 tubes of this product. I have used on five replacement windows and to caulk new hardboard siding on our home. Guns well, dries fairly quickly and takes paint well. Our RV door window was leaking and I removed it and resealed with this caulking and problem solved. Great and reliable product. ... show more
Reviewed in the United States on February 10, 2026 by mark
    • The best caulk.
I buy these by the case and have gone through 3 cases already. All tubes were of good quality and the only variation between cases is the viscosity of the caulk being a little thinner then old caulk that has been sitting around. All the performance you would expect from the dynaflex 230 product with caulk completely cured the next day. ... show more
Reviewed in the United States on June 14, 2024 by Chad L
    • Looks great!
Works great for remodeling. I found it dries fast and applies easily on baseboards. Seems very durable. Matches my white paint. Versatile.
Reviewed in the United States on April 12, 2026 by Ron
    • Good Price and quick delivery
Delivered on time and the DAP clauk is very easy to use.
Reviewed in the United States on August 13, 2026 by Brian Dewhirst
    • Great product
This stuff is amazing. I feel really silly saying that about caulking, but it’s awesome. The price on Amazon was great, it arrived in just a couple days, I thought the product itself was really workable, with a really smooth, finish even in large gaps and a very quick dry time. I will be buying another case. ... show more
Reviewed in the United States on August 27, 2025 by Geoffrey Smith

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