Water Based—Light Fibers
Products Product Description 


Gray-Lightly-FibrousGray, lightly fibrous, solids content of 65%, dry to touch in 1-2 hours, cure time in 48 hours, UL Listed 181B-MSpec Sheet
Item Codes

Duroseal RF

DurosealGray, lightly fibrous, solids content of 75%, dry to touch in 3-6 hours, cure time 18-36 hours, UL Listed 181B-MSpec Sheet


EZ-SealGray, lightly fibrous, solid contents of 64%, dry to touch in 1 hour, cure time 24-72 hours, UL Listed 181B-MSpec Sheet
Water Based—Heavily Fibrous
Products Product Description 

CCW 181

Gray-or-White-Heavily-FibrousHardcast's CCW 181 available in both white or graySpec Sheet
Item Codes

Versa Grip 102

Versa-Grip-102Hardcast's Versa Grip 102 WhiteSpec Sheet
Item Codes
Fiber Free
Products Product Description 

550 Flex Grip

Fiber-FreeHardcast's 550 Flex Grip—Gray, Fiber FreeSpec Sheet
Item Codes

601 Iron Grip

Hardcast-601Hardcast's original and premium water-based duct sealant is fiber free, gray, and often times specified on government jobs.Spec Sheet
Item Codes


PROsealDuctmate's premium mastic, PROseal is gray, smooth textured, stays permanently flexible.Spec Sheet
Item Codes


Ductmate-EversealDuctmate's Everseal is a mastic designed to be an equivalent to their PROseal, but at a lower price point. Spec Sheet
Item Codes

DuroSeal RS

DuroSeal-RSDuroDyne’s EDS-RS is a smooth water based duct sealant designed for use in high velocity systems up to 15 w.g.Spec Sheet

Spray Grade

Spray-Grade-SealantFor contractors choosing the labor savings of applying Duct Sealant by Spray System rather than manual brush on, Conklin offers the Hardcast Spray Seal and Ductmate PROseal Spray. These are fiber free sealantswith a lower viscosity ( thinner material) formulated to use thru a Spray System. Standard PROseal and 550 Flex Grip are intended for brush on application but can be sprayed if a larger size spray tip is used.Spray-Seal
Spec Sheet
Item Codes
Solvent Based
Products Product Description 


Gray-Light-Consistancy404 Sure Grip solvent based synthetic rubber mastic national best seller in the solvent based sealant category.Spec Sheet
Item Codes


Hardcast44-52 Eco-Seal gray solvent based mastic applies easily, dries quickly, and adheres strongly.Spec Sheet
Item Codes


PolymerPolymer’s Air Seal Zero is gray, solvent based yet with zero VOCs, and dries in minutes Spec Sheet
Item Codes
Rolled Mastic
Products Product Description 

Duct Sealant
On a Roll

Duct-sealant-on-a-rollContractors that do more add on/replacement work (vs new construction) will often bypasss
the standard bucket and brush application in favor of the mastic on a 2” or 3” wide roll with a peel away strippable film, a product which
has the benefits of labor savings, a clean application, immediate tack and easy to tear zero.
1402 Spec Sheet
1403 Spec Sheet
1404 Spec Sheet
Aluma Grip
Item Codes
Mobile Spray System
Products Product Description 

Spray System

Spray SystemHardcast's Mobile Sealant Delivery system saves the labor of manual brushing and makes for a cleaner looking application.Spec Sheet
Demo Video
Sealant – Application Accessories
Products Product Description 


BrushesChip Brushes avaliable in 1 1/2", 2", and 3" sizes.Item Codes

Caulk Gun

Caulk-GunDuro Dyne's SG1 Caulk Gun is a heavy-duty professional quality skeleton caulking gun with “no drip” feature, spout cutter, seal puncture tool and ladder hook for hanging when not in use.Spec Sheet
Item Code