Hardcast VG-181-4 Duct Sealant 304138

The Hardcast VG-181-4 is a duct sealant supplied for sealing joints and seams in ductwork systems.

Product designations in duct sealing frequently reference the standard the material is listed to, and understanding what those listings cover is useful when specifying.

UL 181 and its related listings cover materials used in duct construction and sealing, testing them for properties including flame spread, smoke development, durability, and adhesion. Different suffixes within the family apply to different product types and applications, covering closure systems for rigid duct, flexible duct, and duct board.

The practical significance is that inspectors check for the listing marking, and materials without it may be rejected regardless of how well they perform.

Beyond compliance, the listing addresses real safety considerations. Duct runs through the building and connects spaces, so materials with poor flame and smoke characteristics inside a duct system present a genuine hazard.

The other property the listing addresses is durability. A sealant that performs well when applied and fails after five years leaves the system leaking, and the failure is concealed inside a ceiling or attic where nobody observes it.

Confirm the sealant carries the listing required for the duct type and jurisdiction, that it suits the temperature range and materials involved, and apply to clean, dry surfaces after the joints are mechanically fastened.

Brand

Hardcast

SKU

304138

Category

Duct Sealants

Weight

11.4 lbs

Dimensions

8.00" x 8.00" x 8.25"

Price

$45.00

Availability

In stock

Rating

0 / 5.0