Sika Sikasil® 728 NS Non-sag, ultra low modulus, highway/parking garage, neutral cure silicone sealant

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Sika Sikasil® 728 NS Non-sag, ultra low modulus, highway/parking garage, neutral cure silicone sealant
Categories:	Polymer; Adhesive; Thermoset; Silicone; Silicone, RTV, Adhesive/Sealant Grade
Material Notes:	Sikasil 728 NS is a high performance, non-sag. one-component , ultra low modulus elastomeric, neutral cure silicone sealant. Meets the requirements of ASTM D-5893: ASTM C-920, Type S, Grade NS, Class 100/50, Use NT, T, M, G, A, O with ultra low Shore Hardness: TT-S-00230C, Type II, Class A; Class A. Where to Use: Construction Application: Highway joints Bridges Stadiums Parking garages Plaza decks Driveways Decks Expansion joints Saw cut joints Substrate: Concrete, steel, glass, aluminum, ceramic, masonry, brick, stone and granite. Advantages: Durable Ideal for cold climates Excellent flexibility for extreme high and low temperature conditions Excellent flexibility for dynamic joint movement Bonds to most substrates without priming; best performance obtained in horizontal joints when primed Ready to use, labor cost reduction Non sag, excellent for vertical joints All season ease of application Excellent for use on all types of concrete joints Jet fuel resistant Resistant to road salts Information provided by Sika Corporation.
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Physical Properties	Original Value	Comments

Volatile Organic Compounds (VOC) Content	21 g/l	1.64% by wt

Mechanical Properties	Original Value	Comments
Hardness, Shore A	5.0 - 10	ASTM C-661 & ASTM D-2240
Hardness, Shore OO	50	ASTM C-661 & ASTM D-2240
Tensile Strength	175 psi	ASTM D412
Tensile Stress at Strain	35.0 psi @Strain 100 %	ASTM D412
Elongation at Break	1000 %	ASTM D412
Peel Strength	40.0 pli	ASTM C794

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	350 °F
Minimum Service Temperature, Air	-80.0 °F

Processing Properties	Original Value	Comments
Cure Time	15.0 - 25.0 min	Skin-over Time
	24.0 hour @Thickness 1.59 mm
Tack-Free Time	30.0 - 40.0 min	ASTM C679
Shelf Life	12.0 Month @Temperature <=32.0 °C	in original unopened cartridge

Descriptive Properties
Color	Limestone and Charcoal Gray

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PSIKA950 / 209857

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