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OSI Quad Max Black Silicone Door/Siding/ Window Caulk Sealant 9.5 oz

OSI Quad Max Black Silicone Door/Siding/ Window Caulk Sealant 9.5 oz

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

OSI Quad Max Black Silicone Caulk Sealant, 9.5 oz is your go-to solution for durable, flexible seals around doors, siding, and windows. This cartridge-based sealant is designed to…

Osi MPN 1868687 In Stock & Ready to Ship
Local Price Check i Local stores may price this as low as $12.99. Our online price is $13.99.
$13.99
Includes free shipping on orders over $75 · $8.99 standard below
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Cases of 12 · Order in multiples of 12

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Take $25.20 off your case at checkout

Case of 12 · List Price $167.88
15% OFF with code at checkout $142.68
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This product is packed and shipped from our distribution network as a complete case of 12. Apply casediscount at checkout to take 15% off your order.

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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.
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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.

About Product Overview

OSI Quad Max Black Silicone Caulk Sealant, 9.5 oz is your go-to solution for durable, flexible seals around doors, siding, and windows. This cartridge-based sealant is designed to perform in both indoor and outdoor environments, delivering a lasting, paintable finish that moves with the changes in temperature and weather.

  • Permanent flexibility—silicone formulation stays elastic over time, minimizing cracks and gaps as structures shift or settle.
  • Moisture and mildew resistant—built to resist moisture and mildew for long-lasting performance in damp or humid areas.
  • Paintable—match trims, siding, or accents by painting over the sealant after cure, for a seamless look.
  • Indoor and outdoor use—suitable for exterior siding joints as well as interior door and window frames.
  • Cartridge packaging—easy to apply with standard caulk guns, ensuring clean lines and professional results.
  • Color and compatibility—classic black color that blends with dark trims and siding; compatible with a variety of common substrates.
  • Cure time—.reach handling in 24–72 hours, depending on environmental conditions.
  • Coverage—covers a area of 29.75 (units as packaged), making it suitable for multiple joints per tube.
  • Target applications—specifically formulated for joints around doors, siding, and windows to seal out air and moisture while allowing for movement.

Not intended for high-heat or fire-rated applications. If you’re sealing gaps around exterior doors or siding and want a durable, mildew-resistant, paintable silicone sealant that stays flexible through seasonal changes, OSI Quad Max Black Silicone Caulk Sealant is built to deliver reliable performance year after year.

Recommended use cases include weatherproofing exterior doorframes, sealing window perimeters, and caulking siding joints where movement is expected. Ideal for DIY projects or professional renovations, this sealant helps you achieve a clean, professional finish without sacrificing flexibility or moisture resistance.

The Details Specifications

Brand Osi
SKU 1036736
UPC 028756967880
Unit 0
Case Pack Quantity 12 per case
Retail Unit Quantity 12
Unit of Measure 0 0
Dimensions (L × W × H) 9 × 6 × 13
Weight 13 lbs
Cubic Feet 0.03391 ft³
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

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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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