Product Data Sheet
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Sikaflex® Primer-260

Sikaflex® Primer-260

Sikaflex primers are special materials formulated to improve the bond of Sikaflex urethane sealants when applied to specific substrates.

Sikaflex® Primer-260 promotes adhesion of urethane sealants to various metallic, non-metallic, and plastic substrates.

  • Single-component, ready to use
  • Easily applied by brush, dauber, or spray
Product Data Sheet
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Usage

Most substrates require a primer only if testing shows need for it or where the sealant will be underwater after cure. Certain substrates do require a primer under all conditions.  

Advantages

  • Single-component, ready to use
  • Easily applied by brush, dauber, or spray

Packaging

available in pints, 6/carton.

Color

Clear

Product Details

Product Information

Shelf Life

6 months in original, unopened containers.

Storage Conditions

Sikaflex® Primer-260 shall be stored in dry conditions, where it is protected from direct sunlight and at temperatures between +40°F and +95°F (+4°C and +35°C).

Application

Consumption

Coverage

Following are average coverages, depending on porosity of substrate:

Sikaflex Primer 260 Coverage per pint (Liner ft. 1/2” x 1/2” joint):

300-500 Linear ft.
Application steps

APPLICATION INSTRUCTIONS

Substrate

Primer Required

Recommended Primer

Marble

No

260

Siliconized Polyester

Yes

260

Alucobond

Yes

260

LexanYes260
TeflonNo Bond Achieved
PolyethyleneNo Bond Achieved
PolypropyleneNo Bond Achieved
Glass - Sheet, float or plateNo260
PorcelainNo260
Ceramic tileNo260
Aluminum - AnodizedNo260
Aluminum - Mill FinishYes260
LeadNo260
Copper (bright/clean)No260
BrassNo260
ZincNo260
TinplateNo260
Steel (Bright/Clean)No260
Steel - StainlessYes260
Steel - GalvanizedYes260

SUBSTRATE PREPARATION

The key to good bonding with Sikaflex sealants/primers is surface preparation. Specifically, all surfaces must be dry and free of dirt, grease, mold release agents, loose mortar, laitance, and any foreign matter. If the joint contains old sealant, it and all extraneous material must be removed and the substrate cleaned by mechanical means. Apply primers at substrate temperatures of 40°F and rising. Surface must be frost free.

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