SIKAFLEX 201

Harmonization Code : 3907.30.00.40 | Epoxy Mold Compounds containing by weight more than 70 % silicon dioxide

SIKAFLEX 201

Main features

  • Long Four-Hour Skin Time
  • Non-Sag Industrial Joint Sealing
  • Sandable and Paintable Surface

Product Description

Sikaflex-201 US is a one-component, moisture-curing polyurethane sealant for permanent flexible and elastic industrial seals. Its non-sag consistency supports controlled joint filling, while a four-hour skin time at 23 deg C and 50% relative humidity allows additional working time before tooling. The cured sealant has 550% elongation and a Shore A hardness of 45 under ASTM D412 and CQP023-1 / ISO 48-4. It can be sanded and painted after skin formation and is used for joints, seams, and gaps in HVAC systems, metal buildings, tanks, grain bins, and non-vehicular window perimeters.

Key features

  • Long tooling window: Four-hour skin time allows additional working time at 23 deg C and 50% relative humidity
  • Non-sag application: Good non-sag properties support controlled joint filling
  • Elastic cured seal: ASTM D412 elongation at break is 550%

Applications

Sealing joints, seams, and gaps in HVAC systems, metal buildings, tanks, grain bins, and non-vehicular window perimeters.

Product Family

SIKAFLEX 201

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Chemistry Type
polyurethane
Component System
Describes the number of components that must be supplied, mixed, or activated before application or cure.
one
Density
Volumetric mass per unit
1.5 kg/m3
Mechanical Properties
Elongation
Elongation is the process of lengthening something. It is a percentage that measures the initial, unstressed, length compared to the length of the material right before it breaks. It is commonly referred to as Ultimate Elongation or Tensile Elongation at break.
550 %
Thermal Properties
Operating Temperature
-40 to 90 °C

Additional Information

Technical properties

As-supplied / before-processing properties

Property Value Unit Method / condition
Chemical base 1-component polyurethane As supplied
Color White, aluminum gray, tan, capitol tan, MB bronze, black CQP001-1
Density 1.5 kg/l Uncured
Non-sag properties Good As supplied
Application temperature 5 to 40 deg C Product and ambient range
Skin time 4 hours CQP019-1; 23 deg C / 50% RH
Shelf life - cartridge / unipack 12 months Storage below 25 deg C
Shelf life - pail / drum 6 months Storage below 25 deg C
Technical properties

After-processing / final-state properties

Property Value Unit Method / condition
Hardness 45 Shore A CQP023-1 / ISO 48-4
Tensile strength 1.3 MPa ASTM D412
Elongation at break 550 % ASTM D412
Service temperature -40 to 90 deg C CQP513-1

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