Seal it Right 128 – Color: Clear | White | Black

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APPLICATION INSTRUCTIONS

  • ¨ SURFACE PREPARATION

Substrate surface should be thoroughly cleaned with a suitable solvent such as
alcohol, xylene, or methyl ethyle ketone (MEK). Do not use soap, detergent or water.
Wipe the surface dry. Sealant will not properly adhere to a wet substrate.

  • ¨ MASKING

To obtain a neat sealant line, use masking tape to cover areas adjacent to any joints
before priming.

  • ¨ PRIMER

A preliminary adhesion test of sealant on the substrate is recommended to ascertain
proper adhesion. For difficult-to-bond substrates, use of a primer. Allow
primer to dry thoroughly before proceeding.

  • ¨ BACK-UP MATERIAL

Do not apply sealant in direct contact with organic rubber such as chloroprene or EPT
etc. Rubber closed to into back-up materials may stain the silicone sealant.

  • APPLYING AND TOOLING SEALANT

Cut nozzle to desired bead size, break the membrane film completely and extrude
sealant in the joint. Tool immediately, within 5 minutes of application, with a spatula to
spread the sealant against the back-up material and joint surfaces. Remove masking
tape immediately after tooling. Sealant will begin to skin on the exposed surface in
about 10 minutes and cure will progress inward.

HANDLING AND SAFETY

  • ¨ Wear eye protection when handling uncured sealant as it can irritate eyes. In case of

eye contact, immediately flush eyes well with water and contact a physician.

  • ¨ This product releases acetoxy vapors as a by-product of cure. Adequate

ventilation must be maintained in the work place at all times.

  • ¨ Extended contact with the skin may cause irritation and should be avoided.
  • ¨ Not for food contact use.
Category:

SEAL IT RIGHT-128 is a one-component silicone sealant which cures to a high modulus silicone rubber on exposure to atmospheric moisture at room temperature.

This product is a acetoxy cure sealant which emit vinegar odor during curing process and virtually corrosive to some metal substrates.

In addition to the unique features of silicone rubber such as superior high and low temperature resistance, water resistance, outstanding weatherability also provides excellent adhesion to glass, metal/steel* and numerous construction materials.

SEALIR-128 is highly suitable for general glazing, sealing and caulking of interior and exterior building joints, windows, doors, glass to glass, pipes.

* can be corrosive to some metal/steel

KEY PERFORMANCE PROPERTIES

¨ One component, ready-to-use sealant
¨ Room temperature cure
¨ Acetoxy cure
¨ Vinegar odor during cure
¨ Easy gunnability over a wide temperature range
¨ Maintains good flexibility
¨ Excellent adhesion to many materials

APPLICATIONS

¨ Sealant for glass-to-glass and glass-to-metal sashing
¨ Sealant for general glazing, sealing and caulking of interior and exterior application

TYPICAL UNCURED PROPERTIES

   

SEAL IT RIGHT-168
Consistency Paste
Specific Gravity                                (23°C) 1.03
Extrudability                                        sec                   3
Tack-Free Time                                (23˚C) min 15
Slump                                                   mm <1

TYPICAL CURED PROPERTIES

   

SEAL IT RIGHT-168
Hardness 25
Tensile strength                               MPa 1.2
Elongation                                            % 300
Adhesion area 100% cohesion failure
UV resistance Excellent

Test Method: JIS A 1439

Typical property data values should be used as specifications. Assistance and specifications are available
by contacting Momentive Performance Materials.

 

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