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Hi-Flex 50 MS Polymer Hybrid Sealant

Hi-Flex 50 MS Polymer Hybrid Sealant

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Price Per Unit: $10.90

Price Per Box: $9.81

Hi-Flex 50 offers high flexibility, UV resistance, and strong adhesion. Ideal for waterproofing, construction, and marine use with low VOC and mould resistance.
Vendor: Adheseal
SKU: HIFLEX50GR/SSG
Availability: In Stock
$10.90
$10.90
Prices do not include GST
Physical Properties
Chemical properties: Ms polymer, neutral cure, moisture curing
Colour: Grey (ral 7047)
Packaging options: 600ml sausage
Specific gravity: 1.64 ± 0.05
Shore a hardness: 35
Tensile strength: Not specified
Elongation at break: 200%
Cure rate: 3mm per 24 hours at 25°c and 50% rh
Skin formation time: 30 minutes at 25°c and 50% rh
Application temperature: 5°c to 40°c (41°f to 104°f)
Service temperature: -40°c to 100°c (-40°f to 212°f)
Movement capability: ±25%
Voc content: 1.5%
Coverage rate: 6 linear metres per 600ml sausage at 10x10mm joint
Storage temperature: 5°c to 25°c (41°f to 77°f)
Shelf life: 12 months from date of production
Standards compliance: Astm c719, green star compliant

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Shipping & Delivery

$15.95 + GST for Australia-wide shipping, excluding DG, oversized, long-length, and bagged items over 15kg. Rural, remote areas and site deliveries are also ineligible. If your order includes any of these, we will contact you to arrange additional freight fees. Online purchases only.

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Hi-Flex 50 MS Polymer Hybrid Sealant
Adheseal
Hi-Flex 50 MS Polymer Hybrid Sealant
$10.90
Hi-Flex 50 MS Polymer Hybrid Sealant
Adheseal
Hi-Flex 50 MS Polymer Hybrid Sealant
$10.90
Size: 600ml
Colour: Grey
Package Type: Single Buy
Description  
Use Hi-Flex 50 MS Polymer Hybrid Sealant for: Creating waterproof, flexible seals in construction joints, waterproofing systems, and marine or automotive assemblies. It excels in UV-exposed, humid environments without staining or gassing.

Hi-Flex 50 MS Polymer Hybrid Sealant is a high-modulus, elastomeric joint sealant designed for Australian construction and waterproofing applications. With exceptional UV resistance and primeless adhesion on most substrates, Hi-Flex 50 remains permanently flexible and durable, even in hot and humid environments. This low-VOC, mould-resistant sealant is ideal for use with waterproofing membranes, general construction, and marine or automotive sealing. Hi-Flex 50 is user-friendly, non-corrosive, and resists bubbling under high humidity, making it a reliable choice for professionals demanding longevity and performance.

Key Features of Hi-Flex 50 MS Polymer Hybrid Sealant

  • Outstanding adhesion on non-porous substrates without primer
  • Movement capability of ±25% accommodates structural shifts
  • Compatible with Adheseal Everflex waterproofing membranes
  • Excellent UV, weather, and mould resistance for outdoor use
  • Paintable and non-staining for aesthetic finish
  • Easy to gun and tool, non-sagging thixotropic paste

Technical Overview

  • Chemical Properties: MS Polymer, Neutral Cure, Moisture Curing
  • Application Temperature Range: 5°C to 40°C (41°F to 104°F)
  • Service Temperature: -40°C to 100°C (-40°F to 212°F)
  • Skin Time: 30 minutes at 25°C and 50% RH
  • Cure Rate: 3mm per 24 hours at 25°C and 50% RH
  • VOC Content: 1.5% (USEPA)

Trade Professional Information

  • Required Tools: Sausage gun, spatula, masking tape, Adhefoam backer rod
  • Trade-Specific Tips: Avoid air entrapment to prevent bubbling; use bond breaker tape for shallow joints
  • Common Issues and Solutions: Test adhesion on stone and plastic surfaces; clean with Xylene for optimal bond

Storage and Shelf Life

  • Storage Requirements: Store between 5°C and 25°C (41°F to 77°F), in a dry area
  • Shelf Life Information: 12 months from production date
  • Temperature Considerations: Do not store above 25°C (77°F); protect from freezing

Certifications

  • Green Star compliant – low VOC rating
  • ASTM C719 Movement Capability Certified
  • Compliant with Australian construction safety regulations
Common Questions  

Frequently Asked Questions About Hi-Flex 50 MS Polymer Hybrid Sealant

Q: How should I apply Hi-Flex 50 for sealing construction joints?

A: Ensure surfaces are dry and clean. Use a sausage gun with a 45° cut nozzle to apply a continuous bead, then tool with a moistened spatula before skin formation.

Q: Can Hi-Flex 50 be used in high humidity areas?

A: Yes, Hi-Flex 50 resists bubbling and gassing, even in humid environments, and maintains excellent adhesion and flexibility under such conditions.

Q: Is Hi-Flex 50 compatible with all waterproofing membranes?

A: Hi-Flex 50 is compatible with Adheseal Everflex Aqua-Ban, WPM, WPUV, and SMP membranes. Compatibility with others should be tested prior to application.

Q: What causes poor adhesion or discolouration?

A: Incompatible substrates, surface contamination, or improper preparation can cause these issues. Always perform a compatibility and adhesion test before use.

Q: How do I safely clean and dispose of Hi-Flex 50?

A: Clean wet sealant with Xylene. Dispose of cured product as non-hazardous waste. Always wear gloves and safety glasses, and follow local regulations.

Uses & Benefits  

Use Hi-Flex 50 MS Polymer Hybrid Sealant for:

  • Bond breaking and fillet sealing in waterproofing systems
  • Sealing prefabricated building joints and concrete panels
  • Marine and automotive component bonding and sealing
  • Aluminium fabrication and bolted lap joint sealing

Why Use Hi-Flex 50 MS Polymer Hybrid Sealant:

  • Permanent flexibility ensures long-term durability in dynamic joints
  • Inhibits mould and mildew growth in hot, humid conditions
  • Low VOC content supports environmentally responsible construction
  • Resistant to staining, UV degradation, and weather exposure
How To Apply  

How to apply Hi-Flex 50 MS Polymer Hybrid Sealant:

  1. Clean and dry all substrates thoroughly; remove dust, oil, and contaminants
  2. Apply masking tape for neat joints; use backer rod or bond breaker tape where needed
  3. Cut nozzle at 45° angle, apply a continuous bead with sausage gun at 45° angle
  4. Tool the sealant with a moistened spatula before it skins (approx. 30 minutes)
  5. Clean excess before curing; remove masking tape while sealant is still wet
Limitations and Safety Info  

Hi-Flex 50 MS Polymer Hybrid Sealant limitations:

  • Not suitable for long-term water immersion or swimming pool interiors
  • Do not use in confined spaces without atmospheric humidity exposure
  • Unsuitable for bituminous or EPDM surfaces, or with solvent-based cleaners
  • May discolour copper, brass, and some stone; always test first

Safety precautions when using Hi-Flex 50 MS Polymer Hybrid Sealant:

  • Personal Protective Equipment: Gloves, safety glasses recommended
  • Ventilation: Use in well-ventilated areas
  • Handling: Avoid contact with skin and eyes; clean up promptly
  • Dispose of in accordance with local regulations; never ingest or inhale vapours
Suitable Substrates  

Hi-Flex 50 MS Polymer Hybrid Sealant can be used on the following substrates:

  • Masonry including fibre cement board – clean and dry before use
  • Metals (excluding lead and copper) – roughen and clean before applying
  • Timber and plasterboard – ensure stable and dust-free surface
  • Plastics and powder coat – preliminary adhesion test recommended
  • Waterproof membranes – compatible with Everflex systems

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