Product Overview

Testing Data
For specific test criteria, refer to the UL Product iQ or call RectorSeal.
Metacaulk 350i was tested at positive pressure with a minimum 0.01 (2.5 Pa) inches
water and in accordance with ASTM E814 (UL 1479) and ASTM E1966 (UL 2079). Tested to
the time-temperature requirements of ASTM E119 (UL 263).
Complies to UL Required Environmental Exposure Testing of Accelerated Aging
and High Humidity for intumescent materials as per UL 1479 Fire Test of Through-
Penetration Firestops.
Sound Transmission Class (STC) 53 - The test was performed in accordance with
ASTM E90, Standard Test Method for Laboratory Measurement of Airborne Sound
Transmission Loss of Building Partitions and Elements.
FBC™ System Compatible* indicates that this product has been tested, and is monitored on an ongoing basis,
to assure its chemical compatibility with FlowGuard Gold®, BlazeMaster® and Corzan® piping systems and
products made with TempRite® Technology.
The FBC System Compatible Logo, FBC™, FlowGuard Gold®, BlazeMaster®, Corzan® and TempRite® are trademarks of Lubrizol
Advanced Materials, Inc. or its affiliates.
Storage & Handling
Metacaulk 350i should be stored between 35˚F (2˚C) and 120˚F (49˚C) to obtain a 3 year
shelf life.
NOTE: Do not dilute, no mixing is required. Best if protected from freezing. If freezing
occurs, thaw completely before using. Keep products stored under protective cover in
original containers.
Inspection & Repair
RectorSeal recommends that a firestop system inspection be conducted during
installation of the material in accordance with ASTM E2174 and ASTM E2393. In the
event post-installation inspection and destructive sampling is necessary, RectorSeal
advises repairing the damaged firestop system by replacing any material that was
removed or damaged with the same product originally installed, and ensuring
the assembly matches the original firestop listing. RectorSeal advises, that due to
the chemical nature of firestop products and sealants, material depth should be
determined by measuring the points of adhesion at the substrate bond area as
sealants may decrease in size during the curing process.
Limitations
Metacaulk 350i is not designed to be used in areas under continuous immersion or in
areas which would be continuously wet. Metacaulk 350i should not be used against
hot uninsulated surfaces above 300˚F (149˚C).
Cautions
FOR CHEMICAL EMERGENCY, SPILL, LEAK, FIRE, EXPOSURE OR ACCIDENT, CALL CHEMTREC-DAY OR NIGHT
1-800-424-9300.
PRECAUTIONS: Do not take internally. May be harmful if swallowed. May cause eye and skin irritation if
prolonged or repeated contact occurs. Wash after handling. FIRST AID: For any overexposure, get immediate
medical attention after first aid is given. EYES-Flush 15 minutes with clean water. SKIN-Wash with soap and
water. INHALATION-Remove to fresh air. INGESTION-Only if conscious, give large amounts of water and INDUCE
VOMITING. FIRE AND SPILLS: Use water fog, CO
2
, foam, or dry chemicals. Wipe up spills to prevent footing hazard.
Clean up with scrapers and water. STORAGE AND HANDLING: Store away from heat sources. Keep container
closed. Do not reuse empty container. KEEP OUT OF REACH OF CHILDREN.
For additional information, refer to Safety Data Sheet.
Asbestos Fillers None
Solvents None
Hazardous
Ingredients
None
Application Caulking Gun
or Trowel
Application
Temperature
between
40˚F - 120˚F
4˚C - 49˚C
Activation of Intumescence:
Expansion Begins 375˚F (190˚C)
Expansion Greatest 575˚F - 1100˚F
302˚C - 593˚C
Color Dark Red
Cure Time 3 to 4 weeks
(at 77˚F/25˚C)
Density ~ 11.0 lbs/gal
~1.32 kg/L
Elastomeric Yes
Freeze/Thaw Excellent
Skin Over Time 30 min.
(at 77˚F/25˚C)
pH Value 6.5 to 7
Volume Coverage:
for 10.3 oz. tube 18 cu. in.
(304 ml)
for 20.2 oz. foil packs 36 cu. in.
(597 ml)
for 5 gallon 1155 cu. in.
(18.9 liter)
VOC Negligible
ASTM E84, UL 723 Tunnel Test
Flame Spread 5
Smoke Index 10
Material Properties
Manufactured by RectorSeal
,
LLC  2601 Spenwick Drive, Houston, TX 77055, USA  800-231-3345  Fax [phone]  RectorSeal.com
A CSW Industrials Company. RectorSeal, the logos and other trademarks are property of RectorSeal, LLC, its afliates or its licensor’s and are protected by copyright, trademark and other intellectual
property laws, and may not be used without permission. RectorSeal reserves the right to change specications without prior notice. ©2018 RectorSeal. All rights reserved. R50101-0420
Limited Warranty
RectorSeal, LLC makes the Limited Express Warranty that when the instructions for storage and handling of our products are
followed we warrant our products to be free from defects. THIS LIMITED EXPRESS WARRANTY IS EXPRESSLY IN LIEU OF ANY OTHER
EXPRESS OR IMPLIED WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE, AND OF ANY OTHER OBLIGATION ON THE PART OF RectorSeal, LLC. The sole remedy for breach of the Limited Express
Warranty shall be the refund of the purchase price. All other liability is negated and disclaimed, and RectorSeal, LLC shall not be
liable for incidental or consequential damages.