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Flexiseal MS 25

Flexiseal MS 25

Availability: For Trade Only

Selleys Flexiseal MS 25 is a non-slumping SMP low modulus joint sealant. It has excellent adhesive properties to most common building substrates, weatherproof and suitable for indoor and outdoor applications. It is available as a 600mL sausage in a range of colours.

Features

  • Highly flexible – suitable for +/-25% joint movement capability
  • Low modulus of elasticity
  • Excellent resistance to aging and weathering
  • No shrinkage during curing
  • Excellent adhesion on common building materials such as concrete, masonry, brick, ceramic tile, metals, softwood, hardwood and some plastics
  • Certified according to ASTM C920

Product is for trade users only and is not available for sale online.

Size

600mL Sausage

Colour

Black, Grey, White

Shelf Life For Unopened Product

12 Months

Technology

Use

Exterior, Interior

Where can this product be used?
Ideal for elastic joint sealing of expansion and construction joints between common building materials in vertical and horizontal surfaces such as:
  • Expansion joints in precast elements
  • Perimeter seals around windows and doors
  • Weatherproofing joints between brickwork, masonry, wood concrete or metal frames
  • Joints in walls, balconies, around window or door frames
  • Joints in bridge and balcony parapets
  • Roofing
  • Acoustic rated walls

What materials is this product suitable for?
  • Concrete
  • Masonry
  • Brick
  • Ceramic tile
  • Metals
  • Softwood and Hardwood
  • Some plastics*

  1. Surface must be clean, dry and free from oil, grease, release agents, dust and loose material.
  2. Install backing rod to correct depth apply masking tape as required.
  3. Cut the end of the sausage and insert into a Selleys Sausage Gun.
  4. Extrude sealant into the joint such that it is in full contact with the sides of the joint. Avoid overlapping of sealant to eliminate entrapment of air.
  5. Smooth sealant with spatula forcing the sealant into the joint for better contact with the sides.
  6. Painting with water-based paints when sealant is cured.

Limitations:
  • Do not apply if air or substrate surface temperature is below 5°C.
  • Requires atmospheric moisture to cure.
  • Not recommended for continuous submersion or below water line use.
  • Do not apply in the presence of curing silicone sealants as cure may be affected.
  • Do not use for structural or general glazing.
  • Avoid air entrapment while applying as a sealant.
  • May affect drying of alkyd /oil-based paints.
  • White sealant may yellow slightly with age and exposure to the sun.
  • Do not store product above 30°C.
  • MS 25 generally has good adhesion properties without priming to common building materials indicated.
  • *For some plastics and pre-painted surfaces; priming may be required and a pre-test to ensure suitable adhesion is recommended.
  • Store unopened sausages below 30°C in a cool dry place away from direct sunlight. Unopened sausages can be stored for 12 months from the date of manufacture. Opened sausages may skin and form a lump near the opening. Discard any lumps or skin and remaining product can be used.
  • Spills and tools can be cleaned up with mineral turpentine before product cures.
  • Cured product can only be removed mechanically.

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  • Product Details
  • Size

    600mL Sausage

    Colour

    Black, Grey, White

    Shelf Life For Unopened Product

    12 Months

    Technology

    Use

    Exterior, Interior

    Where can this product be used?
    Ideal for elastic joint sealing of expansion and construction joints between common building materials in vertical and horizontal surfaces such as:
    • Expansion joints in precast elements
    • Perimeter seals around windows and doors
    • Weatherproofing joints between brickwork, masonry, wood concrete or metal frames
    • Joints in walls, balconies, around window or door frames
    • Joints in bridge and balcony parapets
    • Roofing
    • Acoustic rated walls

    What materials is this product suitable for?
    • Concrete
    • Masonry
    • Brick
    • Ceramic tile
    • Metals
    • Softwood and Hardwood
    • Some plastics*

  • How To Use
    1. Surface must be clean, dry and free from oil, grease, release agents, dust and loose material.
    2. Install backing rod to correct depth apply masking tape as required.
    3. Cut the end of the sausage and insert into a Selleys Sausage Gun.
    4. Extrude sealant into the joint such that it is in full contact with the sides of the joint. Avoid overlapping of sealant to eliminate entrapment of air.
    5. Smooth sealant with spatula forcing the sealant into the joint for better contact with the sides.
    6. Painting with water-based paints when sealant is cured.

    Limitations:
    • Do not apply if air or substrate surface temperature is below 5°C.
    • Requires atmospheric moisture to cure.
    • Not recommended for continuous submersion or below water line use.
    • Do not apply in the presence of curing silicone sealants as cure may be affected.
    • Do not use for structural or general glazing.
    • Avoid air entrapment while applying as a sealant.
    • May affect drying of alkyd /oil-based paints.
    • White sealant may yellow slightly with age and exposure to the sun.
    • Do not store product above 30°C.
  • Handy Tips
    • MS 25 generally has good adhesion properties without priming to common building materials indicated.
    • *For some plastics and pre-painted surfaces; priming may be required and a pre-test to ensure suitable adhesion is recommended.
    • Store unopened sausages below 30°C in a cool dry place away from direct sunlight. Unopened sausages can be stored for 12 months from the date of manufacture. Opened sausages may skin and form a lump near the opening. Discard any lumps or skin and remaining product can be used.
  • Clean Up
    • Spills and tools can be cleaned up with mineral turpentine before product cures.
    • Cured product can only be removed mechanically.
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