Hardcast Two Part II Sealing System User Manual

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TWO PART II SEALING SYSTEM

DT-Tape with RTA-50 (INDOOR/OUTDOOR)

The Original Indoor/Outdoor Duct Sealing System

TWO PART II is Hardcast's original mineral-gypsum-compound-impregnated fiber tape and liquid sealant duct
joint sealer. The industry standard two part system for sealing low, medium and high pressure duct systems.

TECHNICAL DATA

INSTALLED WITH DT-TAPE

RTA-50 SEALANT

Bonding Time ......................................................... 48 Hrs.*

Service Temperatures ..................................0°F to 200° F

Surface Burning

Flame Spread ............................................................. 0

Smoke Developed...................................................... 0

Weather QUV .................................Passed 1000 hrs QUV

Pressure Classes .....................1/2,1,2,3,4,6,10 inches w.g.

Seal Classes ..................................... All SMACNA Classes

Mildew Resistance..................... Mold & Mildew Resistant

Flexibility................................................................Excellent

Freeze/Thaw Stability ......Passed 5 c ycles (Stir before use)

VOC (Less Water)................................................. 135 GPL

* May vary according to temperature and humidity

(When tested in accordance with ASTM E-84)

City of Los Angeles Approval RR#8069

DT-TAPE

Appearance------------- White Impregnated Fiber Tape
Packaging --------------- 150 ft. rolls in widths of:

DT 5300 ---------------- 3” - 12 rolls per case
DT 5400 ---------------- 4” - 12 rols per case

TWO PART II PART NUMBERS

RTA-50: 1 Case w/ (4) 1-Gallon Pails ................ 304168

DT-5300: 1 Case w/ (12) 3” x 150’ Rolls ............304164

DT-5400: 1 Case w/ (12) 4” x 150’ Rolls ............304165

2 Part II Dispensor: 1 Unit.................................304286

APPLICATION

Apply to outer surface of duct joint only

(After duct is installed)

Temperature............ 35°F to 110°F

Method...................... Use 2 Part II Dispenser or brush.

Wrap wet tape around duct joint,
smoothing out wrinkles or
bubbles.

Preparation .............. Surface must be dry, dirt, oil, and

grease free.

Clean Up Wet ........... Soap and Water

Clean Up Dry ............

Painting .................... Only latex or epoxy paints

UNN -GRIP™ 798-ES or solvent

(Use safe handling practices)

STORAGE

Temperature............ 35°F to 110°F-DO NOT FREEZE

Shelf Life .................. RTA 50 = One year (Unopened)

DT-Tape = Not Applicable

Two Part II SEALANT DISPENSER

Appearance ............. Combined tape roll holder / dispenser;

pail mounted design.

Construction ............ Custom designed, high impact polyethylene

Capacities Tape....... 150 ft./roll of 3” or 4” DT Tape

PRECAUTIONS

Surfaces must be clean and free of moisture, contamination
and foreign matter. Do not apply when rain or freezing tempera­tures will occur within 72 hours. Do not apply where tempera­tures will exceed 200ºF. Store DT Tape in DRY ATMOSPHERE.
Keep out of the reach of children. Review MSDS for complete
safety information prior to use. DO NOT use where acidic or
alkaline chemicals are present (ie., lab fume hood, vents, etc.)

For Industrial Professional Use Only

2 Printed in U.S.A. 05/05 supercedes 08/04 ©2005 Carlisle Corporation

Phone: [phone] FAX: [phone]

For additional information contact:

Carlisle Coatings & Waterproofing

900 Hensley Lane

Wylie, Texas 75098

WWW.HARDCAST.COM

Incorporated

TWO P ART II SEALING SYSTEM

APPLICATION INSTRUCTIONS

RTA-50 (Indoor/Outdoor) is specifically designed for use in conjunction with HARDCAST DT-5300, DT-5400, and DT-6100 pres­sureless tape. It is recommended for application to sheetmetal ductwork.

1. HARDCAST recommends the use of our Two Part II Dispenser. When using the dispenser, the bottom guide roller is
submerged in the sealant. The coating control roller should be adjusted to apply a liberal coating of adhesive on the tape as it
emerges from the dispenser. Only DT-5300 and DT-5400 will fit the Two Part II Dispenser.

2. Pull the tape slowly through the dispenser so that it can absorb sufficient sealant and cut to the desired length. The easiest
sizes to handle are 12" to 18" lengths which can be overlapped on each other to form a continuous band around the duct.

3. Apply the tape to duct joint with the heavier coated side down and press firmly to ensure total contact with duct surface. Work
out any air bubbles entrapped under tape. Apply tape to surface immediately after coating with sealant.

4. Apply a top coat of RTA-50 sealant over the tape with a brush.

5. IF A TWO PART II DISPENSER IS NOT AVAILABLE, THE TAPE CAN BE APPLIED USING THE FOLLOWING METHOD:

Cut the tape to the desired (manageable) length and place it on a flat surface. Using a paintbrush apply sealant directly
to both sides of the tape then apply tape to duct joint.

6. Allow a minimum of 72 HOURS drying time before turning on the system (on interior duct only).

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7. After the sealant has dried a minimum of 72 HOURS, on exterior duct apply an additional coat of RTA-50 to tape surface.
Drying time may take longer depending on temperature and relative humidity conditions.

8. Coverage: Approximately 1 gallon RTA-50 per two 3” X 150’ rolls of DT-Tape.

CAUTION: Surface must be clean and free of moisture, contamination and foreign matter for best results. Do not apply when

rain or freezing temperatures will occur within 72 hours. Use only latex or epoxy based paints to cover Hardcast products.

CAUTION: If product freezes, return to room temperature and stir before use.

LEAKAGE TEST: Use smoke method only. Do not use soap and water for test.

FOR SPECIAL APPLICATIONS CONTACT HARDCAST

RTA-50

LIQUID SEALANT

CAUTION

HARMFUL IF SWALLOWED OR INHALED
Avoid breathing vapors. Keep container closed when not in use. Use with adequate ventilation. Wash thoroughly after handling. If swallowed DO NOT
INDUCE VOMITING. Call a physician. Overexposure to vapors may cause respiratory irritation. If inhaled, remove to fresh air. If not breathing, give
artificial respiration. If breathing is difficult, give oxygen. Contact a physician immediately.
MAY CAUSE SKIN IRRITATION: Prolonged or repeated contact may cause drying, brittleness, cracking or irritation. Use of impervious gloves and clothing
recommended. Avoid contact with skin. May be irritating to sensitive skin. Wash thoroughly after handling. In case of contact with skin, remove
contaminated clothing and thoroughly wash affected area with soap and water. Do not use if skin is broken. If rash develops, discontinue use. Contact
a physician if symptoms persist.

REVIEW MATERIAL SAFETY DATA SHEET FOR COMPLETE SAFETY INFORMATION PRIOR TO USE.

CONTAINS: ETHYLENE GLYCOL

FOR INDUSTRIAL USE ONLY.

MAY NOT BE REPACKAGED OR SOLD FOR OTHER THAN INDUSTRIAL OR PROFESSIONAL USE.

KEEP OUT OF REACH OF CHILDREN

Printed in U.S.A. 05/05 supercedes 08/04 ©2005 Carlisle Corporation 3

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