Multi-Purpose PU (polyurethane) Adhesive Joint Sealant (Surtek 3621)

Model NO.: Surtek 3621 Morphology: Uniform Paste Material: Polyurethane Main Agent Composition: Polyurethane Prepolymer Promoter Composition: Complexing Agent Color: Black White Grey Cure Mechanism: Moisture-Curing Rate of Cure (23 ºC, 50% Rh): ≥ 3.5 mm/24hrs Shore a Hardness: ~40 Tensile Strength: ≥ 2 N/mm^2 Tear Strength: 6 N/mm Transport Package: 310ml Cartridge 600ml Sausage 200L Drum Origin: China Bonding Function: Adhesive Joint Sealing Application: Automobile, Construction Classification: Room Curing Characteristic: Waterproofing Composition: Organic Material Density: 1.35±0.05 Kg/L Tack-Free Time (23 ºC, 50% Rh): 40~60 Min Non-Sag Properties: Good Shear Strength: ≥ 1 N/mm^2 Elongation at Break: ~ 500% Trademark: Surtek Specification: ISO9001/TS16949 HS Code: 3506100090 DESCRIPTION
Surtek 3621 is a one-component, moisture-curable, polyurethane-based, elastic adhesive joint sealant. After curing, it provides a permanently elastic bond to fasten materials with different coefficients of expansion.

ADVANTAGES
1, Good Adhesion to a wide range of substrates.
2, Cures rapidly to a permanently elastic consistency with excellent cut and tear resistance.
3, Low odor, non-staining.
4, Surface paintable with water, oil, and rubber based coatings.
5, Non-corrosive.
6, Provides shock resistance and vibration damping.
7, Exhibits high recovery (> 90%), making it ideal for sealing dynamically moving joints.
8, Weather resistant.

APPLICATIONS
1, Vehicle bodies and cab construction including panels, underbody components, and roofing.
2, Front and rear spoilers, auto trim, moldings, body seams, and welded joints.
3, Waterproofing exterior lap seams in many applications, including truck trailers, RV's, metal roofs, window perimeters, grain bins and HVAC units.
4, Waterproofing rivet seams.
5, Sealing of exposed and concealed joints of aluminum, steel, coated metals, wood, roof rails, and door hinges in transport equipment.
6, Sealing and caulking expansion joints, pre-cast concrete panel joints and joints between logs on log homes.

DETAILED IMAGE






TECHNICAL DATA SHEET OF SURTEK 3621

Appearance	Uniform Paste
Color	Black/White Grey
Density	1.35 ± 0.05 kg/L
Tack-free time*	40~60 min
Rate of cure*	~3.5 mm per 24 hrs
Shore A hardness	40±5
Tensile strength	≥2 N/mm^2
Elongation at break	≥500%
Shear strength	≥1 N/ mm^2
Glass transition temperature	-45°C, approx.
Service temperature (continuous) Short - term (up to 48 hrs)	-40°C to +90°C 120°C

PROCESS
Cleaning:
Clean surface with a strong jet of compressed air, sandblast, or solvent to ensure the surface being clean, dry, free of oil, grease and of sound quality.
Activating/Priming:
Activators and/or primers may be required to achieve optimal adhesion depending on the nature of substrates.
Application of sealant:
Cut tip to desired shape and size. Puncture airtight seal. Intsall with hand or power operated gun and extrude the sealant into the joint. Clean excess sealant using hard rubber plate or finger wet with soap solution.

PACKAGING
1.310ml cartridge
2.Flexible Package: 400ml, 600ml sausage
3.Drum: 200L

STORAGE AND SHELF LIFE
When stored at the recommended conditions in original, unopened containers, this product has a shelf life of 9 months. The shelf life of Polyurethane Sealant is related to the temperature and humidity of the environment. The recommended storage temperature is 5-25° C, humidity is

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Product Categories : Pu Adhesive Sealant For Automobile