Carlisle Hardcast CLK-WHT White Silicone Sealant 10.1 Oz

Product Description

The CARLISLE HARDCAST CLK-WHT is a 100% silicone, one-component RTV sealant designed for industrial sealing and adhesive applications across HVAC, plumbing, and general mechanical trades. Packaged in a 10.1 fl oz cartridge, this non-slump, paste-consistency formula cures at room temperature by reacting with ambient moisture to form a durable, flexible silicone rubber. The white color suits visible joint work where aesthetics matter. With a rated service range of -62 degrees F to 400 degrees F, it holds up in both high-heat exhaust applications and cold-climate installs.

This sealant is suited for a broad range of industrial and mechanical sealing tasks, including duct joints, equipment housings, gasket fabrication, and general-purpose adhesive bonding in HVAC and related trades. The one-component RTV format requires no mixing, making it practical for field use by HVAC technicians, plumbers, and mechanical contractors working on residential and light commercial systems. The paste-like, non-slump consistency allows controlled application on vertical and overhead surfaces without sagging before cure.

Key Features

• 100% silicone, one-component RTV formula cures by moisture reaction at room temperature
• Non-slump, paste-like consistency for controlled bead placement on vertical and overhead surfaces
• Service temperature range of -62 degrees F to 400 degrees F suits high-heat and cold-climate applications
• White color finish for use on visible joints and trim-out work
• 10.1 fl oz cartridge compatible with standard caulk guns
• Made in the USA

Compatibility

Designed as a general-purpose one-component RTV silicone sealant for industrial sealing and adhesive applications across HVAC, mechanical, plumbing, and related trade uses.

Installation Notes

Application is typically performed by HVAC technicians, pipefitters, or mechanical contractors using a standard cartridge caulk gun. Surfaces should be clean, dry, and free of grease or loose material before applying sealant. Allow adequate cure time before exposing the joint to service conditions; cure rate depends on ambient temperature and humidity. This product is subject to California Proposition 65 warnings — consult the Safety Data Sheet before use in enclosed or poorly ventilated spaces.

Technical Specifications

• Type: Silicone RTV
• Color: White
• Volume: 10.1 fl oz
• Temperature Range: -62 degrees F to 400 degrees F
• Components: One-component
• UV Resistant: No
• Length: 1.75 inches
• Width: 1.75 inches
• Height: 9.45 inches
• Weight: 0.74 pounds
• Country of Origin: USA
• Prop 65: Yes

Standard Information

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