TDS

TECHNICAL DATA SHEETTECHNICAL DATA SHEET
BEHR WEATHERSTRONG™ ADVANCED HYBRID SEALANT
NO. BS40
PRODUCT INFORMATION
BEHR WEATHERSTRONG™ is a high performance hybrid sealant that provides superior stretch and durability on most dicult
substrates. This UV-resistant formula can be applied in both wet and dry conditions and can seal active leaks up to 1/4" size.
RECOMMENDED USES:
Use on properly prepared interior or exterior surfaces to seal connection joints such as:
• Baseboards • Window Frames • Door Frames • Trim • Molding
• Siding • Stairs • Skirtings • Window Sills • Corner Joints
• Pipes • Vents
Use for transitional seal between building materials:
• Wood • Drywall/Gypsum Board • Plaster • Brick • Concrete
• Fiber Cement • Fiber Cement • Most Metals • Stone • Glass
• Vinyl • Kynar-coated Metals • Bonderized Metal • Galvalume • Other Common Building Materials
COMPLIES WITH THE BELOW AS OF 4/1/2021
SCAQMD Rule 1168 YES
CARB YES
OTC YES
EPA YES
ASTM C920, Type S, Grade NS, Class 50,
Use T, NT, G, A
YES
AAMA 713-10 YES YES
AAMA 803.3-10 YES YES
US Federal Specication TT-S-00230C YES
FEATURES & BENEFITS:
• All-weather application; wet surface/in-rain application
• Strong bond to dicult substrates
• Weatherproof & waterproof
• Exceptional exibility
• Paint-ready in 1 hour
• Consistent ow/no air pops
• Won’t shine through or discolor paint
• Easy gunning and smooth tooling
• Reduced dirt pick-up
• Non-yellowing
• Asphalt-compatible
PRODUCT SPECIFICATIONS:
Tint Bases/Max Tint Load:
No. 5000 Deep Base 116  oz / 14  oz
Product No./Packaging/Color:
BS40 / 9.5  oz cartridge / White
Base Polymer: Silyl Modied Polyether
Density: 13.7 lb/gal
VOC: < 20 g/L
Flash Point: ≥ 284°F
COVERAGE CHART:
Coverage will vary depending upon joint size. Approximate
coverage for a 10.1  oz cartridge is 55 linear feet with a
3/16" bead.
DEPTH
WIDTH
3/16" 1/4" 3/8"
3/16" 55
1/4" 32
3/8" 13.5
APPLICATION:
• Using proper safety precautions, cut the tip at a 45° angle
to desired bead size.
• Apply with conventional hand or air-powered caulking
equipment in a continuous operation with adequate
pressure to ll the joint to the proper width and depth (do
not overll the joint).
• Gun sealant into void to provide a solid ll.
• Use backer rod for gaps larger than 1/2" x 1/2".
• Smooth the sealant before the skin forms using a dry tool
with a concave prole. Do not use water or soapy water for
this operation.
• Allow 1 hour for sealant skin to form before painting with a
brush/roller, or spray paint immediately.
• Excess dried sealant must be cut or scraped away.
• Reseal cartridge for storage and reuse.
Dry Time: 77°F & 50% RH
Longer dry time required in cooler temperatures and in
higher humidity.
Tooling Time (Working Time): 10 minutes
Skinning Time: 1 hour
Paint-Ready Time:
with spray - immediately
with brush/roller -1 hour
Water-Ready Time: immediately
Full Cure: 3 - 4 days
SURFACE PREPARATION:
All surfaces must be clean and free of dust, chalk, oil,
grease, wax, polish, mold and mildew stains, rust, loose
material and all other foreign substances.
CURED PERFORMANCE PROPERTIES:
CLEANUP & DISPOSAL:
Clean tools, equipment and excess uncured material with
mineral spirits, solvent or cleaning wipes. For disposal of
empty containers, unused product and soiled rags, contact
your household refuse collection service.
Linear feet per 9.5  oz cartridge
Service Temperature Range -15°F to 160°F
Shiners/Discoloration NONE
Hardness Shore A
ASTM C661
38
UV Resistance
ASTM C793
Pass
Modulus @ 100% Elongation
ASTM D412
70 psi
Tensile Strength @ Break
ASTM C794
180 psi
Elongation @ Break
ASTM D412
950%
Adhesion Peel
ASTM C794
> 35 lb/in
Joint Movement Capability
ASTM C719
± 50%
Coating Compatibility Water-Based Paints
Cracking and Chalking
Resistance ASTM C792
Pass
This information is provided “as is” and no representations or warranties, either express or implied, of merchantability, tness for a particular purpose or of any other
nature are made with respect to this information or to any product referred to in this information. For SDS or to consult with a Behr Paint Company representative, call
1-800-854-0133 Ext. 2 (U.S.A. only). ©2021 Behr Process Corporation Santa Ana, CA 92705 U.S.A.
Revised 4/2021
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