Gold Member Since 2011
Audited Supplier
Beijing Comens New Materials Co., Ltd.

Polyurethane Sealant, Windsreen Sesalant, Adhesive Sealant manufacturer / supplier in China, offering Multi-Purpose PU (polyurethane) Adhesive Joint Sealant (Surtek 3621), Polyurethane Sealant for Structural Auto Body Sealing, Adhesive for Windshield and so on.

(/ )

Supplier Homepage Product PU Auto Glass Adhesive Sealant Multi-Purpose PU (polyurethane) Adhesive Joint Sealant (Surtek 3621)

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

FOB Price: Get Latest Price
Min. Order: 2,000 Pieces
Port: Tianjin, China
Production Capacity: 72000000PCS/Year
Payment Terms: L/C, T/T, Western Union, Paypal, Money Gram

Request a custom order and have something just for you!

Send Customized Request
Basic Info
  • 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
Product 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.

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.

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.


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

AppearanceUniform Paste
ColorBlack/White Grey
Density1.35 ± 0.05 kg/L
Tack-free time*40~60 min
Rate of cure*~3.5 mm per 24 hrs
Shore A hardness40±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
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.
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.

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

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 <50% RH. It is strictly prohibited that the transportation or storage temperature is over 30° C or the humidity is over 80% RH. And high-temperature container transportation is prohibited as well. In the long-time high temperature and high humidity storage environment, the product is easy to get viscous, extrusion will be deteriorated and shelf life will be shortened.

Multi-Purpose PU (polyurethane) Adhesive Joint Sealant (Surtek 3621)
Multi-Purpose PU (polyurethane) Adhesive Joint Sealant (Surtek 3621)
Send your message to this supplier
Ms. Stella Gao
To: Ms. Stella Gao

Enter between 20 to 4,000 characters.

This is not what you are looking for? Post a Sourcing Request Now

Find Similar Products By Category