Will this work under the tracts of a steel shed placed on cement to keep water out?

Yes it will work. Place caulking between metal and cement ,then seal along the edge on the outside of metal strip. Very little shrinkage even after it drys.

Can I use it for expansion joints on the exterior concrete block walls?

Probably not. It is flexible but I don't think it will Last very long.

Does this clear dry more of the "milky/opaque" clear, vs the crystal clear/transparent?

it dries clear cant hardly tell its on there but takes awhile to dry clear<

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12 Pack of 10.1 Oz Dap 18305 Dynaflex 230 Clear Premium Window, Door, and Trim Sealant

12 Pack of 10.1 Oz Dap 18305 Dynaflex 230 Clear Premium Window, Door, and Trim Sealant

Product ID: 99706005

Details

Brand
DAP
Color
Clear
Full Cure Time
72 hours
Item Weight
10.1 ounces
Liquid Volume
10.1 fluid

🎨Paintable & easy clean-up

💧Waterproof sealant

🛠️Fills gaps up to 1 inch

¥38039

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Seal smart, seal strong — don’t let cracks steal your style!

VERSATILE USE CASES - Perfect for windows, doors, trim, siding, molding, and baseboards—seal with confidence.
CRACK PROOF FLEXIBILITY - Silicone-based formula ensures superior elasticity that resists cracking over time.
BULK PACK FOR PRO EFFICIENCY - 12-pack supply keeps your projects moving without interruption or extra trips.
PROFESSIONAL GRADE DURABILITY - Exceeds federal and ASTM standards for long-lasting, mold-resistant seals.
EFFORTLESS APPLICATION CLEANUP - Low odor, easy tooling, and water clean-up make your project hassle-free.

This 12-pack of DAP Dynaflex 230 Clear Sealant offers a premium, waterproof, and paintable solution designed for professional-grade sealing around windows, doors, and trim. With superior flexibility, crack resistance, and mold/mildew protection, it fills gaps up to 1 inch and cleans up easily with water, meeting rigorous federal and ASTM standards for durability and performance.

Specifications

ASIN	B002YCD6GC
Best Sellers Rank	#39,998 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #124 in Adhesive Caulk #19,133 in Hardware
Brand Name	DAP
Color	Clear
Customer Reviews	4.4 4.4 out of 5 stars (639)
Full Cure Time	72 hours
Included Components	Dap - 7079818304 - 12/Pack
Item Form	Paste
Item Type Name	Dap - 7079818304 - 12/Pack
Item Weight	10.1 ounces
Liquid Volume	10.1 fluid ounces
Manufacturer	DAP
Material Type	Synthetic Elastomer or Rubber
Maximum Gap Fill	1 inches
Model	Dap - 7079818304 - 12/Pack
Number of Items	12
Number of Packs	12
Part Number	Dap - 7079818304 - 12/Pack
Surface Recommendation	Window
Temperature Range	40 °F
UPC	070798892026
Unit Count	121.2 Fluid Ounces
Warranty Description	Warranty
Water Resistance Level	Waterproof

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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The product quality is outstanding. Exactly what I needed for my work.

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¥38039

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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Perfect platform for hard-to-find items. Delivery was prompt.

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