PILEHEAD
MAPEFLEX PU S25

Mapei

MAPEFLEX PU S25

Low modulus elastic polyurethane sealant for joints. Mapeflex PU S25 has been specially developed for sealing internal and external vertical expansion and construction joints. Colour: Grey, Beige and off-white Packaging: Boxes of 24, 600 ml sausage Storage: Mapeflex PU S25 may be stored for upto 12 months in a cool, dry place
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SKU: MAPEI-MAPEFLEX-PU-S25-433

About this itemMAPEI CERTIFIED

  • Elasticity: Low modulus of elasticity with elongation at failure of 900%. LOW MODULUS POLYURETHANE SEALANT
  • Temperature Resistance: In-service temperature range from -40°C to +80°C. ISO 11600 F-25 LM CERTIFIED
  • Application Temperature: Can be applied in temperatures ranging from +5°C to +40°C. PAINTABLE AFTER CURING
  • Classification: Certified as F-25 LM according to ISO 11600 standards. MAPEI CERTIFIED

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Uses & Advantages

Primary Uses

  • Sealing joints in façades of civil and industrial buildings
  • Sealing pre-cast concrete panels
  • Sealing brick and block façades
  • Sealing metal panels and other general construction joints

Key Advantages

  • Accommodates joint movements up to ±25%
  • Good UV resistance for outdoor applications
  • Can be painted over after curing (preliminary tests recommended)
  • Adheres well to absorbent and non-absorbent surfaces with or without primer

FEATURES & BENEFITS

TECHNICAL DATASHEET SPEC

Elasticity

Low modulus of elasticity with elongation at failure of 900%.

Temperature Resistance

In-service temperature range from -40°C to +80°C.

Application Temperature

Can be applied in temperatures ranging from +5°C to +40°C.

Classification

Certified as F-25 LM according to ISO 11600 standards.

Hardening Time

Dust dry in 1.5 hours; final setting of 3 mm in 24 hours at +23°C and 50% relative humidity.

Mapeflex PU S25 is a one-component, gun-grade polyurethane-based sealant designed for sealing internal and external vertical expansion and construction joints. With a low modulus of elasticity and thixotropic consistency, it is easy to apply and provides long-lasting performance. The product hardens by reacting with moisture in the air and is suitable for a wide range of substrates, including concrete, brick, metal, and more.

Key Specifications

Origin: UAE
AppearanceThixotropic paste
Density1.25 g/cm³
Dry solids content99%
VOC emission0 g/litre
Shore A hardness20
Tensile strength1.0 N/mm²
Packaging / Pack SizeAvailable in boxes of 24 sausages, each containing 600 ml of product. Colors include offwhite (RAL 9003), beige (RAL 1015), and grey (RAL 7040).
Certified standard values under UAE climate conditions.

DOWNLOADS & DATA SHEETS

Mapei MAPEFLEX PU S25 SDSMapei MAPEFLEX PU S25 TDS

Key Performance Benefits

  • Elasticity

    Low modulus of elasticity with elongation at failure of 900%.

  • Temperature Resistance

    In-service temperature range from -40°C to +80°C.

  • Application Temperature

    Can be applied in temperatures ranging from +5°C to +40°C.

  • Classification

    Certified as F-25 LM according to ISO 11600 standards.

  • Hardening Time

    Dust dry in 1.5 hours; final setting of 3 mm in 24 hours at +23°C and 50% relative humidity.

Storage & Handling Guidelines

  • Store in a cool, dry place between +5°C and +25°C with 50% relative humidity.
  • Shelf life is up to 12 months when stored in original, unopened packaging.
Product packaging

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FREQUENTLY ASKED QUESTIONS

Q&A TECHNICAL HUB
Coverage depends on joint size. For example, a 600 ml cartridge covers approximately 24 meters for a 5x5 mm joint, 6 meters for a 10x10 mm joint, and 1.9 meters for a 25x12.5 mm joint.

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