Carlisle Hardcast CLK-CLR Clear Silicone Sealant 10.1 Oz

Product Description

The CARLISLE HARDCAST CLK-CLR is a 100% silicone, one-component RTV sealant formulated for industrial sealing and adhesive applications. It delivers a non-slump, paste-like consistency that stays in place during application, making it well-suited for overhead and vertical joints. The sealant cures at room temperature through moisture reaction, producing a durable, flexible silicone rubber bond. Packaged in a standard 10.1 oz cartridge, it is compatible with most caulk guns used in HVAC, mechanical, and general construction trades.

This sealant is used across a wide range of industrial and commercial sealing scenarios, including duct joints, equipment enclosures, mechanical penetrations, and general construction gaps. Its clear finish makes it a practical choice where appearance matters or where the sealant must remain low-profile after curing. HVAC technicians, sheet metal workers, and general contractors commonly apply this product during installation and service work on both residential and commercial systems.

Key Features

• 100% silicone formulation produces a flexible, durable rubber seal after cure
• Non-slump, paste-like consistency holds position on vertical and overhead surfaces
• Single-component RTV — no mixing required, ready to apply from the cartridge
• Cures at room temperature via ambient moisture reaction
• Clear finish blends with most substrate colors
• 10.1 oz cartridge fits standard caulk guns

Compatibility

Designed for a wide variety of industrial sealing and adhesive applications across HVAC, mechanical, and general construction trades where a flexible, moisture-curing silicone sealant is required.

Installation Notes

Apply using a standard caulk gun to clean, dry surfaces free of dust, oil, and loose material. Allow full cure time before exposing the joint to moisture or mechanical stress. Follow applicable building and mechanical codes when sealing duct penetrations or equipment enclosures. Ensure adequate ventilation during application, as the curing process releases acetic acid byproducts common to acetoxy-cure silicone sealants.

Technical Specifications

• Net Fill: 10.1 oz
• Length: 1.75 inches
• Width: 1.75 inches
• Height: 9.45 inches
• Weight: 0.74 pounds
• Cure Type: Moisture-cure RTV
• Components: One-component
• Finish: Clear

Standard Information

• Brand: CARLISLE HARDCAST
• Manufacturer Part Number: CLK-CLR