- Polypropylene film backing provides high tensile strength for demanding applications.
- Hand tearable tape unwinds easily from the roll.
- Resists flame, moisture, UV degradation, attack.
- Protects and insulates flexible ducts and connector systems.
- Durable cold weather acrylic adhesive provides long-term adhesion.
Product Description
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3M Metallized Flexible Duct Tape 3350 is a 3.1 mil thick silver
polypropylene tape with an aggressive acrylic adhesive used for
sealing flexible ducts and connector systems. This tape meets the
requirements of UL181B-FX and is used by commercial contractors
in the residential and commercial construction industry.
From the Manufacturer
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3M™ Metalized Flexible Duct Tape 3350 Silver, with its
aggressive adhesive and durable backing, is ideal for closure and
repair of flexible ducts and air connectors and securing flex
duct-to-duct wrap facings and metal-to-metal connections. This
tough, versatile tape seals and secures seams and joints for
long-term durability in HVAC, appliance automotive, construction,
general industrial, metalworking, MRO, transportation, and more.
Its bi-axially oriented polypropylene (BOPP) backing provides
improved strength and flexibility over oriented polypropylene
(OPP) tapes, and the acrylic adhesive combines to give the tape
the lasting endurance for a variety of applications including
HVAC flexible duct work. The acrylic adhesive maintains a strong
bond through a range of temperatures to provide long-term
endurance. Thermally conductivity helps dissipate excess heat and
keep the tape in place. This durable tape resists flame,
moisture, weather, UV degradation, is resistant, and
carries a UL 181 B-FX Listing for Class 1 flexible duct sealing
as well as UL 723 listing for duct sealing and general repairs.
How to Choose the Right Duct Tape
One of the most important points to think about when choosing a
duct tape is how it is going to be used. When it comes to
choosing a 3M™ Duct Tape that meets the need for a particular
job, consider the following: Performance Plus and Outdoor ing
Tapes are best in class tapes for indoor/outdoor use, offering
clean removal and long term weatherability. Extra Heavy Duty,
Heavy Duty, and Multi Purpose duct tapes provide reliable
performance for demanding contractor, MRO and industrial job site
applications. And General Purpose duct tapes offer cost-effective
options for general and lighter duty applications such as
bundling, sealing, holding, and identifying.
Strength, moisture resistance, abrasion resistance, heat
resistance, and clean removal impact the effectiveness of any
duct tape. Two of three key factors that determine these factors
are backing and adhesive. The thicker the backing, the greater
tensile strength (the resistance to breaking under tension),
moisture, and abrasion resistance provided. A rubber-based or
synthetic rubber adhesive provides instant stick, a strong bond,
and long-lasting hold, even in moist conditions. Lastly, the
distinctive cloth scrim, laminated between the backing and the
adhesive, adds additional strength and also helps guide straight,
horizontal and vertical tearing.
One last and often overlooked fact about tapes in general, is
that they all need to be stored correctly and they all have a
shelf life. Weak adhesion, lifting, curling, and breakage are
more often than not, attributable to age or improperly stored
tape, as sed to quality. In all cases, care should be taken
to read all product information thoroughly. In particular, the
tape's specifications should be weighed against the task at hand
to ensure successful, cost-effective outcomes.
About 3M Industrial Tapes and Adhesives
For more than a century, 3M Company has applied innovative
technologies to improve people’s lives and support customers’
business goals. Today, from headquarters in St. Paul, Minnesota,
the company serves industrial and commercial customers and
consumers in nearly 200 countries.3M industrial adhesives and
tapes include application-specific products that provide
durability, strength, and special characteristics such as
temperature resistance and short- and long-term protection. The
3M brand, across a spectrum of thousands of products, represents
consistency, superior quality, and value.