Hi-Flex 50 - MS Polymer-Based Hybrid Sealant

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Price Per Unit: $10.90

Price Per Box: $9.81

Hi-Flex 50 is a high-performance MS Polymer sealant designed for various applications, including construction, automotive, and marine. It offers excellent adhesion, a movement capability of +/- 25%, and resistance to UV and weathering, making it ideal for sealing joints, bonding materials, and acting as a bond breaker in waterproofing systems.
Vendor: Adheseal
Availability: In Stock

Physical Properties

Type of product: Ms polymer
Curing system: Neutral
Density (specific gravity): 1.64 +/- 0.05 astm d1475
Consistency: Non sagging paste
Elongation at break: 200% approx. astm d412
Application temperature: 5°c to 40°c
Service temperature: -40°c to 100°c
Movement capability: ± 25% astm c719
Hardness: Shore a 55 approx. astm d2240
Voc: 1.5% (usepa)
Shelf life: 12 months
Clean up: Mek, toluol, some industrial cleaning wipes
Colours: Grey

Shipping & Delivery

$15.95 shipping on all orders nationwide for most products

Hi-Flex 50 - MS Polymer-Based Hybrid Sealant

Vendor: Adheseal

Hi-Flex 50 - MS Polymer-Based Hybrid Sealant


Vendor: Adheseal

Hi-Flex 50 - MS Polymer-Based Hybrid Sealant

Size: 600ml
Colour: Grey
Package Type: Single Buy

Hi-Flex 50 is a high-performance, single-component elastomeric joint sealant based on Hybrid MS Polymer technology. Its neutral cure and low modulus formulation offer excellent movement capabilities, while its superior UV and weathering resistance ensure long-lasting performance in all Australian climates. Hi-Flex 50 provides outstanding primerless adhesion to most common construction substrates, resists gassing and bubbling, and is suitable for a wide range of construction, manufacturing, automotive, and marine applications, including use as a bond breaker for waterproofing.

Key Features:

  • Outstanding primerless adhesion on non-porous substrates
  • Movement capability up to +/- 25%
  • Non-bleeding and non-staining
  • Free of isocyanates, solvents, and acids
  • Excellent UV and weathering resistance
  • Easy gunning and tooling
  • Low VOC and Green Star Compliant
  • Paintable

Joint Design:

The sealant joint should be designed to accommodate the sealant's compression and extension capabilities in relation to the anticipated joint movement. Calculate joint width based on a maximum of +/- 25% of the original width. Minimum joint size should be no less than 3mm, and a 2:1 width to depth ratio with a minimum 6mm depth is recommended for movement joints. Suggested joint sizes include 6x6mm, 10x6mm, 16x8mm, and 20x10mm.

Bond Breaker:

The design of the bond breaker is determined by the class of membrane as outlined in their technical data sheets. Hi-Flex 50 is typically used with Class I and Class II membranes.


  • General purpose sealant
  • Expansion and construction joints
  • Sealing and finishing external wall and cladding joints
  • Waterproofing applications (fillet joints and bond breaker)
  • Sealing joints in prefabricated buildings or concrete panels
  • Window fixing and commercial shop fronts
  • Bonding and sealing in automotive and marine manufacturing


  • Provides a durable, flexible, and long-lasting seal
  • Accommodates joint movement without compromising performance
  • Maintains aesthetic appeal with non-bleeding and non-staining properties
  • Safe and easy to use with no harmful chemicals
  • Withstands harsh Australian weather conditions
  • Ensures watertightness in various applications
  • Serves as an effective bond breaker in waterproofing systems
  • Reduces environmental impact with low VOC content
  • Offers versatility for multiple industries

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