--- product_id: 43008357 title: "18280 Dynaflex 230 Premium Indoor/Outdoor Sealant, 10.1 fl oz Capacity, Black (Case of 12)" brand: "dap" price: "¥41706" currency: JPY in_stock: true reviews_count: 8 category: "Dap" url: https://www.desertcart.jp/products/43008357-18280-dynaflex-230-premium-indoor-outdoor-sealant-10-1-fl store_origin: JP region: Japan --- # Waterproof & weatherproof seal - ultimate protection Premium black elastomeric formula - blends seamlessly 10.1 fl oz per tube - perfect for multiple projects 18280 Dynaflex 230 Premium Indoor/Outdoor Sealant, 10.1 fl oz Capacity, Black (Case of 12) **Brand:** dap **Price:** ¥41706 **Availability:** ✅ In Stock ## Summary > 🖤 Seal smart, seal strong — the last sealant your projects will ever need! ## Quick Answers - **What is this?** 18280 Dynaflex 230 Premium Indoor/Outdoor Sealant, 10.1 fl oz Capacity, Black (Case of 12) by dap - **How much does it cost?** ¥41706 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/43008357-18280-dynaflex-230-premium-indoor-outdoor-sealant-10-1-fl) ## Best For - dap enthusiasts ## Why This Product - Trusted dap brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Fast, Reliable Cure:** Fully cures in 24 hours, so your projects stay on schedule without compromise. - • **Seal with Confidence:** Advanced latex technology ensures a watertight, weatherproof barrier that lasts through seasons. - • **Durability That Outperforms:** Survives winter plowing and resists cracking better than traditional tar sealants. - • **Versatile Indoor/Outdoor Use:** Perfect for everything from driveway cracks to window and door frames, indoors or out. - • **Professional Grade Compliance:** Meets Federal Spec TT-S-00230C and ASTM C 920 standards for trusted quality. ## Overview DAP Dynaflex 230 is a premium black elastomeric sealant designed for both indoor and outdoor use. Each 10.1 fl oz tube delivers a waterproof, weatherproof seal with superior adhesion and flexibility, curing fully in 24 hours. Engineered to withstand harsh weather and heavy wear, it meets rigorous federal and ASTM standards, making it the go-to choice for professionals and DIYers aiming for durable, flawless finishes. ## Description Dap 18280 10.1 Oz Black Dynaflex 230 Premium Indoor/Outdoor Sealant Review: Good product - I use this for driveway cracks. It works better for me than the tar stuff and cracks less with time. BUT..... it must stay dry for at least 24 hours preferably 48 hours after application! Easy to work with and blends with the asphalt driveway. Survives the winter plowing better than other products I've tried. Spring repairs are easier with this stuff. Review: Great quality - Used this around all of my exterior windows and doors works great ## Features - Black DYNAFLEX 230 Premium Elastomeric Sealant 10.1 oz - DAP's most advanced latex sealant technology. - Provides excellent adhesion and a watertight, weatherproof seal. - Interior/exterior use - Federal Spec. TT-S-00230C, Type II, Class A, ASTM Spec. C 920, Class 25 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0166MG7OS | | Best Sellers Rank | #66,141 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #197 in Adhesive Caulk #31,422 in Hardware | | Brand | DAP | | Brand Name | DAP | | Color | WHITE | | Customer Reviews | 4.6 out of 5 stars 77 Reviews | | Full Cure Time | 24 Hours | | Included Components | Item | | Item Form | Liquid | | Item Weight | 12 Pounds | | Liquid Volume | 10.1 Fluid Ounces | | Manufacturer | DAP PRODUCTS INC | | Material Type | Silicone | | Model | 18280 | | Number of Items | 12 | | Part Number | 18280 | | Surface Recommendation | Miscellaneous | | Tensile Strength | 800 Pounds Per Square Inch | | UPC | 070798182806 | | Unit Count | 12.00 Count | | Water Resistance Level | Waterproof | ## Product Details - **Brand:** DAP - **Color:** WHITE - **Full Cure Time:** 24 Hours - **Item Weight:** 12 Pounds - **Liquid Volume:** 10.1 Fluid Ounces ## Images ![18280 Dynaflex 230 Premium Indoor/Outdoor Sealant, 10.1 fl oz Capacity, Black (Case of 12) - Image 1](https://m.media-amazon.com/images/I/519SZRgQ6PL.jpg) ## Questions & Answers **Q: is the calking black or white?** A: White **Q: is this better than saschos big stretch?** A: No! **Q: Is this white or black? the heading says black but the description says white** A: My order contained black **Q: is the calking black or white ? make me confuse some answer is white some black.** A: Came out Black ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good product *by C***E on May 30, 2025* I use this for driveway cracks. It works better for me than the tar stuff and cracks less with time. BUT..... it must stay dry for at least 24 hours preferably 48 hours after application! Easy to work with and blends with the asphalt driveway. Survives the winter plowing better than other products I've tried. Spring repairs are easier with this stuff. ### ⭐⭐⭐⭐⭐ Great quality *by B***P on September 14, 2025* Used this around all of my exterior windows and doors works great ### ⭐⭐⭐⭐⭐ Great to work with! *by S***. on November 8, 2023* I find that most dark colored caulking is very difficult to work with as it is more sticky. Not this one! Great adhesion but also easy to clean up. A little pricey but difficult to find elsewhere in black. ## Frequently Bought Together - DAP 18280 Dynaflex 230 Premium Indoor/Outdoor Sealant, 10.1 Fl Oz Capacity, Black (Box of 12) - DAP 12 Pack 18300 DYNAFLEX 230 Premium Indoor/Outdoor Sealant - White 10.1-oz Cartridge (18275) - Dap 18304 12 Pack 10.1-Ounce Dynaflex 230 Premium Indoor/Outdoor Sealant, Clear --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/43008357-18280-dynaflex-230-premium-indoor-outdoor-sealant-10-1-fl](https://www.desertcart.jp/products/43008357-18280-dynaflex-230-premium-indoor-outdoor-sealant-10-1-fl) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-18*