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OSI Quad Max Iron Gray Elastomeric Polymers Caulk Sealant 9.5 oz
OSI Quad Max Iron Gray Elastomeric Polymers Caulk Sealant 9.5 oz
OSI Quad Max Iron Gray Elastomeric Polymers Caulk Sealant 9.5 oz
OSI Quad Max Iron Gray Elastomeric Polymers Caulk Sealant 9.5 oz
OSI Quad Max Iron Gray Elastomeric Polymers Caulk Sealant 9.5 oz
OSI Quad Max Iron Gray Elastomeric Polymers Caulk Sealant 9.5 oz
OSI Quad Max Iron Gray Elastomeric Polymers Caulk Sealant 9.5 oz
OSI Quad Max Iron Gray Elastomeric Polymers Caulk Sealant 9.5 oz
OSI Quad Max Iron Gray Elastomeric Polymers Caulk Sealant 9.5 oz
OSI Quad Max Iron Gray Elastomeric Polymers Caulk Sealant 9.5 oz
OSI Quad Max Iron Gray Elastomeric Polymers Caulk Sealant 9.5 oz

OSI Quad Max Iron Gray Elastomeric Polymers Caulk Sealant 9.5 oz

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

Stays flexible and mildew-resistant through seasons of weather, indoors or out, with paintable finish for a clean match.
Osi MPN 1869643
Sold Locally Only

This product isn’t sold on our website — see your local hardware store.

Typical Store Price i
Typical store price: low $9.99, average $11.99
In-Store Exclusive

This one's worth the trip to the store.

Brands like Weber, Milwaukee, Yeti, and DeWalt restrict where their products can be sold online — and for good reason. In-store buyers get authentic products, full manufacturer warranty, and access to pricing that simply isn't allowed to be advertised on the web.

  • Authorized dealer network · Full manufacturer warranty & support
  • Guaranteed authentic · No counterfeits, no gray-market resellers
  • The brands set these standards · Be wary of sellers who don't follow them
Why isn't this online? The whole story →

About Product Overview

OSI Quad Max is a pure silicone sealant built for joints that need to stay flexible year after year, whether that's around a window frame, a sink, or an outdoor trim gap. It holds up to moisture and resists mildew, making it a solid pick for both indoor jobs and exterior work exposed to weather. One 9.5 oz cartridge covers roughly 29.1 square feet, and since it's paintable, you can blend it right into the surrounding surface once it cures.

  • Color: Iron Gray
  • Container size: 9.5 oz cartridge
  • Coverage area: approximately 29.1 sq ft
  • Moisture and mildew resistant, permanently flexible
  • Rated for indoor and outdoor use
  • Material: elastomeric polymers

The Details Specifications

Brand Osi
UPC 028756966050
Case Pack Quantity 12 per case
Retail Unit Quantity 12
Dimensions (L × W × H) 8 × 6 × 13
Weight 11 lbs
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
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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.
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Keep the neighborhood working. Every dollar spent at an independent retailer returns roughly 3x more to your local economy than at a national chain.

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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 familiar 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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