SIKAFLEX 255FC

Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other

SIKAFLEX 255FC

Main features

  • Fast-Curing Direct Glazing
  • 20-Minute Glazing Open Time
  • Non-Sag Glazing Bead Application

Product Description

Sikaflex-255 FC is a fast-curing, one-component polyurethane adhesive for direct glazing and glass replacement in commercial vehicles. The black material has very good non-sag properties, a 20-minute open time, and a 40-minute skin time at 23 deg C and 50% relative humidity, supporting controlled glass installation in warm conditions. After cure, typical properties include 6 MPa tensile strength, 450% elongation, 12 N/mm tear propagation resistance, and 4 MPa tensile lap-shear strength. The adhesive is compatible with Sika's black-primerless bonding process for mineral-glass windows within the prescribed pretreatment system.

Key features

  • Fast-curing glazing: The adhesive is formulated for commercial-vehicle direct glazing and glass replacement
  • 20-minute open time: Defines the glass-installation window at 23 deg C and 50% relative humidity
  • Non-sag bead control: Very good non-sag properties support triangular-bead application

Applications

Commercial-vehicle direct glazing; mineral-glass window installation; vehicle glass replacement; Sika black-primerless bonding processes.

Product Family

SIKAFLEX 255FC

Loading pricing…
TDS, SDS & Technical Documents

Technical Specifications

General Properties
Chemistry Type
polyurethane
Color
The color
black
Component System
Describes the number of components that must be supplied, mixed, or activated before application or cure.
one
Density
Volumetric mass per unit
1.2 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.
450 %
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 Black CQP001-1
Density 1.2 kg/l Uncured
Non-sag properties Very good As supplied
Application temperature 10 to 35 deg C Product and ambient range
Skin time 40 minutes CQP019-1; 23 deg C / 50% RH
Open time 20 minutes CQP526-1; 23 deg C / 50% RH
Shelf life - cartridge / unipack 9 months Storage below 25 deg C
Technical properties

After-processing / final-state properties

Property Value Unit Method / condition
Shrinkage 3 % CQP014-1
Hardness 60 Shore A CQP023-1 / ISO 48-4
Tensile strength 6 MPa CQP036-1 / ISO 527
Elongation at break 450 % CQP036-1 / ISO 527
Tear propagation resistance 12 N/mm CQP045-1 / ISO 34
Tensile lap-shear strength 4 MPa CQP046-1 / ISO 4587
Service temperature -40 to 90 deg C CQP509-1 / CQP513-1

Leading Brands Trust in Our Products and Services

Products that Perform| Knowledge that Serves| Service that Delivers