Krylon WL099111B Contractor Silicone Sealant Rtv 10 Oz

Product Description

The KRYLON WL099111B is a contractor-grade silicone sealant formulated as a room-temperature-vulcanizing (RTV) compound. It delivers a flexible, waterproof seal on contact surfaces commonly found in HVAC, plumbing, and general mechanical applications. The sealant cures to a durable elastomeric bead that resists moisture, temperature cycling, and vibration. Available in black, it is suited for installations where color blending with dark substrates or gasket surfaces is preferred. Each cartridge contains 10 oz of material, sized to fit a standard caulk gun. Licensed contractors and experienced tradespeople handling weatherproofing, ductwork sealing, or mechanical joint sealing are the primary installers.

This silicone sealant is used in residential and light commercial settings where a reliable, flexible bead is needed at penetrations, joints, and mechanical connections. Typical applications include sealing around HVAC equipment housings, pipe penetrations through walls or floors, and general-purpose gap sealing where a paintable caulk is not required. The RTV formulation makes it well suited for areas exposed to intermittent moisture and temperature variation.

Key Features

• RTV silicone formulation cures to a flexible, waterproof elastomeric bead
• Black color suits dark substrates and mechanical gasket applications
• 10 oz cartridge fits standard-size caulk guns
• Contractor-grade compound intended for professional trade use
• Resistant to moisture and temperature cycling common in HVAC and plumbing environments

Compatibility

Designed as a general-purpose contractor silicone sealant suitable for use on common building and mechanical substrates including metal, glass, ceramic, and most plastics encountered in HVAC, plumbing, and electrical trade applications.

Installation Notes

Apply using a standard caulk gun with a clean, dry surface free of dust, oil, and loose material. Cut the cartridge nozzle at a 45-degree angle to match the desired bead width. Allow adequate cure time before exposing the bead to water or mechanical stress. Refer to local building codes and manufacturer guidance for use in gas-line penetrations or fire-rated assemblies.

Technical Specifications

• Color: Black
• Net Fill: 10 oz
• Package Weight: 0.82 pounds
• Unit of Measure: Each
• UPC: 023275128644

Standard Information

• Brand: KRYLON
• Manufacturer Part Number: WL099111B