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Flex Seal Family of Products Flex Caulk White Silicone All Purpose Caulk Sealant 6.5 oz
Flex Seal Family of Products Flex Caulk White Silicone All Purpose Caulk Sealant 6.5 oz
Flex Seal Family of Products Flex Caulk White Silicone All Purpose Caulk Sealant 6.5 oz
Flex Seal Family of Products Flex Caulk White Silicone All Purpose Caulk Sealant 6.5 oz
Flex Seal Family of Products Flex Caulk White Silicone All Purpose Caulk Sealant 6.5 oz
Flex Seal Family of Products Flex Caulk White Silicone All Purpose Caulk Sealant 6.5 oz
Flex Seal Family of Products Flex Caulk White Silicone All Purpose Caulk Sealant 6.5 oz
Flex Seal Family of Products Flex Caulk White Silicone All Purpose Caulk Sealant 6.5 oz
Flex Seal Family of Products Flex Caulk White Silicone All Purpose Caulk Sealant 6.5 oz
Flex Seal Family of Products Flex Caulk White Silicone All Purpose Caulk Sealant 6.5 oz

Flex Seal Family of Products Flex Caulk White Silicone All Purpose Caulk Sealant 6.5 oz

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

Meet the Flex Caulk White Silicone All Purpose Caulk Sealant from the Flex Seal Family of Products—a versatile, paintable sealant engineered to protect and finish a wide range of i…

Flex Seal Family Of Products MPN US600WHT200 In Stock & Ready to Ship
Local Price Check i Local stores may price this as low as $15.99. Our online price is $17.99.
$17.99
Includes free shipping on orders over $75 · $8.99 standard below
Delivery in as little as 1–4 business days Order within — for same-day shipping
Cases of 4 · Order in multiples of 4

Sold by the Case · Save 15%

Take $10.80 off your case at checkout

Case of 4 · List Price $71.96
15% OFF with code at checkout $61.16
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This product is packed and shipped from our distribution network as a complete case of 4. Apply casediscount at checkout to take 15% off your order.

Shop Local · Support Independent

Every order helps keep your local hardware store on the corner.

Why we built NHG
You might find it for less locally. Independent retailers often offer competitive pricing — some products are even cheaper in-store than online.
Real expert advice — not search results. Independent hardware staff know their inventory and the local conditions you're working in.
Keep the neighborhood working. Every dollar spent at an independent retailer returns roughly 3x more to your local economy than at a national chain.

About Product Overview

Meet the Flex Caulk White Silicone All Purpose Caulk Sealant from the Flex Seal Family of Products—a versatile, paintable sealant engineered to protect and finish a wide range of indoor and outdoor projects. Packaged in a 6.5 oz can, this silicone caulk delivers a durable, permanently flexible seal that moves with your building and resists moisture and mildew over time.

  • Permanently flexible silicone formula that stays pliant through temperature shifts and building movement
  • Moisture resistant and mildew resistant, making it a reliable choice for bathrooms, kitchens, windows, and exterior gaps
  • Paintable white finish to perfectly match or complement your décor and trim
  • Indoor and outdoor use on surfaces that are dry, smooth, and non-porous
  • Coverage of approximately 30–35 square feet per can, depending on bead size and seam length
  • Easy cleanup with mineral spirits for quick prep and cleanup
  • Durable all-purpose sealant designed for a variety of sealing, bonding, and gap-filling tasks

What makes this caulk stand out

  • Specifically formulated as an all-purpose silicone sealant under the Flex Caulk sub-brand, offering long-lasting performance where water exposure is common
  • The paintable formula allows you to thread the seal into any project by color-matching grout, tile, siding, or trim without compromising the seal
  • Ideal for DIY enthusiasts and professionals who need a reliable seal around showers, tubs, countertops, windows, doors, and exterior openings

Best-use scenarios

  • Bathrooms and showers: seal around tubs, sinks, tile edges, and shower enclosures to prevent water infiltration
  • Kitchens: seal seams around backsplashes, countertops, and sinks for a clean, watertight finish
  • Windows and doors: fill gaps and provide a flexible, weather-resistant seal on interior and exterior applications
  • Exterior siding and trim: bridge joints and provide a durable barrier against moisture and condensation
  • Plumbing penetrations and vent connections: create quick, reliable seals that tolerate movement
  1. Prepare the surface: ensure it is dry, smooth, and non-porous before applying the caulk for optimal adhesion.
  2. Cut the nozzle to the desired bead size and load the 6.5 oz can for application.
  3. Apply an even bead along the joint, maintaining consistent pressure for a uniform seal.
  4. Finish the joint with a caulk finishing tool or a damp finger to create a clean, professional edge.
  5. Wipe away excess sealant with mineral spirits for a tidy cleanup before it cures.

The Details Specifications

Special Handling Special handling and shipping requirements apply.
Brand Flex Seal Family Of Products
SKU 6088889
UPC 810129871609
Unit 0
Case Pack Quantity 4 per case
Retail Unit Quantity 4
Unit of Measure 0 0
Dimensions (L × W × H) 5 × 4 × 12
Weight 3 lbs
Cubic Feet 0.03269 ft³
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

Ask our counter. Or theirs.

Most hardware stores can do more than you think. If we can't help you, the folks down the street probably can — just ask at the counter.

What we offer
Free Local Pickup Ship to your hometown store
Pro & Gov Accounts Net terms · tax-exempt
Ships Nationwide From our distribution network
Independent Network Real hardware stores
$0.68 of every dollar spent at a local independent business stays in the community. At a national chain, it's about fifteen cents. Civic Economics, multi-city retail studies
Their Counter
Try local first · we'll wait

The stores we send you to are local and independently run — often for generations, the kind of place where someone behind the counter knows the regulars. We don't own them. We just think they deserve the foot traffic. They can put most of what we sell on their next truck. Ask there before you check out here.

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About our directory. National Hardware Group is an independent retailer and directory. The local stores we list and link to are separately owned and operated — we have no ownership stake in any of them, and most pay us nothing to be included. That includes plenty of stores flying a co-op banner that people don't realize are locally owned and run, not operated by a corporation. Store owners can choose to upgrade their listing for an enhanced presence or pickup features, but the base directory is free, and inclusion is never a paid endorsement.

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