3M 730

Harmonization Code : 3919.10.80 | Other self-adhesive plastic rolls not exceeding 20 cm wide.

3M 730

Main features

  • Clear Isocyanate-Free SMP
  • 40 to 60-Minute Skin Time
  • Paintable While Wet

Product Description

3M Sealant 730 UV is a clear, one-component silane-modified polymer sealant for cosmetic panel joints in vehicles and architectural assemblies. The isocyanate-free, low-VOC formulation cures with moisture, fills joint gaps, and remains permanently elastic after cure. A surface skin forms in 40 to 60 minutes while moisture curing continues within the joint. Water-based paint can be applied while the sealant is wet. Its transparent appearance and UV resistance suit exposed seams where a visible opaque sealant line is undesirable, including panel sealing on trucks, trains, trailers, and specialty vehicles.

Key features

  • Clear SMP sealant: The one-component, isocyanate-free formulation forms a transparent, permanently elastic joint seal.
  • 40 to 60-minute skin time: This interval applies to formation of the surface skin, not full cure.
  • Wet-paint compatibility: Water-based paint can be applied before the sealant has dried or cured.

Applications

Panel sealing on trucks, trains, trailers, and specialty vehicles; architectural panels.

Product Family

3M 730

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TDS, SDS & Technical Documents

Technical Specifications

Physical Properties
Tack-Free Time
25 - 30 minutes
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.
300 %
General Properties
Specific Gravity
Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume. For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.
1.05
Other Properties
Storage Temperature
Below 25 °C

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