Sikaflex®-402 Airport

• IBU Environmental Product Declaration (EPD)

• ASTM C920-14, Sikaflex-402 Airport, MST, Report No 0716920-SIKA
• Federal Specification SS-S-200E, Sikaflex-402 Airport, Intertek, Report Summary No.F0913.01-106-31

2-Part polyurethane

9 months from the date of production.

The product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +25 °C. Always refer to packaging.

ASTM C920-14: Type M, Grade P, Class 35, Uses T2, and M. Federal Specification SS-S-200E- Passed all requirements.

Jet fuel. Contact Sika Technical Services for specific information.

-40 °C min. / +80 °C max.

The joint dimensions must be designed to suit the movement capability of the sealant. The joint width shall be ≥ 8,0 mm and ≤ 25 mm. The joint depth shall be between 0,5 and 0,8 of the joint width (width to depth ratio between 1:0,8 and 2:1), always ensure  ≥ 8 mm. The joint shall be recessed half of the joint width, always ensure ≥ 10 mm.

Typical joint dimensions

For larger joints contact Sika Technical Services for additional information.

9 : 1 by volume (Part A : Part B)

Use closed cell polyethylene foam backing rod

Self-levelling. Use on slopes ≤  3 %

+5 °C min. / +40 °C max.

+5 °C min. / +40 °C max. 

Minimum 3 °C above dew point temperature

~40 min (23 °C / 50 % r.h.)

~48 hours  to reach full mechanical properties

The concrete substrate must be clean, dry, sound and free from oils, grease, dust, cement laitance and loose or friable particles. Concrete surfaces should be saw-cut or with cement laitance removed. Where joints in substrate are saw cut. After sawing, all slurry material, must be flushed away and joint surfaces allowed to dry. 

For optimum adhesion and joint durability, the following substrate priming (and/or pre-treatment) procedures must be followed:

Prime with Sika® Primer-206 G+P or Sika® Primer-115 by using a clean brush or roller. Before sealing, allow a waiting time of > 30 minutes (< 8 hours).

Note: Primers are adhesion promoters and not an alternative to improve poor preparation / cleaning of the joint surface. Primers also improve the long term adhesion performance of the sealed joint.

Prior to mixing all parts, mix part A using a low speed single paddle electric stirrer (300–400 rpm) until a uniform colour has been achieved. Add part B to part A and mix part A + B continuously for 3,0 to 5,0 minutes until a uniformly coloured mix has been achieved. To ensure thorough mixing pour materials into a clean container and mix again for at least 1,0 minute to achieve a smooth consistent mix. Over mixing must be avoided to minimise air entrainment. During the final mixing stage, scrape down the sides and bottom of the mixing container with a flat or straight edge trowel at least once to ensure complete mixing. Mix full units only. Mixing time for A+B = 4,0–6,0 minutes

Clean all tools and application equipment immediately after use with Sika® Remover-208. Once cured, hardened material can only be removed mechanically. For cleaning skin use Sika® Cleaning Wipes-100.