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OSI Quad Max Black Hills Elastomeric Polymers Caulk Sealant 9.5 oz
OSI Quad Max Black Hills Elastomeric Polymers Caulk Sealant 9.5 oz
OSI Quad Max Black Hills Elastomeric Polymers Caulk Sealant 9.5 oz
OSI Quad Max Black Hills Elastomeric Polymers Caulk Sealant 9.5 oz
OSI Quad Max Black Hills Elastomeric Polymers Caulk Sealant 9.5 oz
OSI Quad Max Black Hills Elastomeric Polymers Caulk Sealant 9.5 oz
OSI Quad Max Black Hills Elastomeric Polymers Caulk Sealant 9.5 oz
OSI Quad Max Black Hills Elastomeric Polymers Caulk Sealant 9.5 oz
OSI Quad Max Black Hills Elastomeric Polymers Caulk Sealant 9.5 oz
OSI Quad Max Black Hills Elastomeric Polymers Caulk Sealant 9.5 oz
OSI Quad Max Black Hills Elastomeric Polymers Caulk Sealant 9.5 oz

OSI Quad Max Black Hills Elastomeric Polymers Caulk Sealant 9.5 oz

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

OSI Quad Max Black Hills Elastomeric Polymers Caulk Sealant 9.5 oz is a premium, paintable sealant designed to protect and perfect joints both indoors and outdoors. In the Black Hi…

Osi MPN 1868720
Sold Locally Only

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

Typical Store Price i
Typical store price: low $11.99, average $13.99
In-Store Exclusive

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

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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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About Product Overview

OSI Quad Max Black Hills Elastomeric Polymers Caulk Sealant 9.5 oz is a premium, paintable sealant designed to protect and perfect joints both indoors and outdoors. In the Black Hills color, this cartridge brings a deep, versatile shade that hides imperfections while delivering a professional finish on dark trim, brick, masonry, and more. Built for real-world use, it stays flexible and durable through seasonal movement and weather exposure, so you don’t have to worry about cracks reopening year after year.

What makes this Quad Max sealant stand out?

  • Permanently flexible elastomeric polymers that absorb expansion and contraction without losing grip, keeping joints sealed even with temperature swings and building movement.
  • Moisture resistant and mildew resistant performance, making it a reliable choice for bathrooms, kitchens, laundry rooms, and exterior surfaces where damp conditions are common.
  • Paintable to match surrounding materials, trims, or siding, so the caulk blends in rather than stands out.
  • Indoor and outdoor use with a cartridge packaging that fits standard caulk guns for easy, precise application.
  • Coverage area: 29.1 per cartridge, giving you substantial sealing capacity in a single tube for larger projects or multiple rooms.

Ideal use scenarios

Why choose OSI Quad Max in Black Hills over ordinary caulks?

  • Superior longevity through adaptable, flexible sealing that resists cracking as surfaces move with temperature changes.
  • Reliable mildew resistance and moisture tolerance that help maintain a clean appearance in humid or damp environments.
  • Paintability lets you customize the finish to match any project, delivering a cohesive, professional result.
  • Versatile indoor/outdoor performance means fewer product swaps across different jobs—one sealant for multiple scenarios.

Practical tips for best results

  • Prepare surfaces by cleaning and drying thoroughly before application to ensure a strong bond.
  • Cut the nozzle to the desired bead size and apply with a standard caulk gun for controlled, even flow.
  • Tool the bead after application to achieve a smooth, finished edge that adheres neatly to corners and joints.
  • Allow sufficient cure time per product guidelines before painting or exposing to heavy moisture. Always follow the packaging for exact instructions.

The Details Specifications

Brand Osi
UPC 028756967750
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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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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