PERMABOND LH197

Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other

PERMABOND LH197

Main features

  • Flexible Flange Gasketing for Dissimilar Metals
  • Low-Strength Gasket for Routine Disassembly
  • Formed-In-Place Sealing for Soft-Metal Surfaces

Product Description

Permabond LH197 is a flexible anaerobic formed-in-place gasket maker for metal flange surfaces, including dissimilar and soft-metal assemblies. The material forms a gasket between mating metal surfaces and is intended for applications where differential thermal expansion or routine disassembly makes a flexible, lower-strength gasket useful. It fills gaps up to 0.3 mm and reaches typical handling strength on M10 steel in 20 minutes at 23 deg C. Typical cured shear strength is 5 MPa on a steel collar-and-pin test to ISO 10123. LH197 can be dismantled with normal tools for flange assemblies that require periodic disassembly.

Key features

  • Flexible formed-in-place gasketing: Forms a flexible gasket between mating metal surfaces.
  • Dissimilar and soft-metal flanges: Designed for dissimilar surfaces and soft metals where differential thermal expansion or damage during disassembly can matter.
  • Routine disassembly with normal tools: The cured gasket can be dismantled with normal tools for assemblies requiring periodic access.

Applications

Formed-in-place gasketing of metal flanges; dissimilar-metal flange sealing; soft-metal surfaces and assemblies requiring routine disassembly.

Product Family

PERMABOND LH197

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Appearance
Appearance at room temperature.
Green
Chemistry Type
Acrylic
Specific Gravity
Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume. For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.
1.1
Physical Properties
Viscosity
Viscosity is a measurement of a fluid’s resistance to flow. Viscosity is commonly measured in centiPoise (cP). One cP is defined as the viscosity of water and all other viscosities are derived from this base. MPa is another common unit with a 1:1 conversion to cP. A product like honey would have a much higher viscosity -around 10,000 cPs- compared to water. As a result, honey would flow much slower out of a tipped glass than water would. The viscosity of a material can be decreased with an increase in temperature in order to better suit an application
50,000 mPa.s
Electrical Properties
Dielectric Strength
Dielectric strength is measured in kV per mm and is calculated by the Breakdown voltage divided by the thickness of the tested material. Those two properties go hand in hand and while Breakdown voltage is always thickness dependent, dielectric strength is a general material property. As an example, the dielectric strength of Polyimide is 236 kV/mm. If we place 1mm of Polyimide between two electrodes, it will act as an insulator until the voltage between the electrodes reaches 236 kV. At this point it will start acting as a good conductor, causing sparks, potential punctures and current flow.
11 kV/mm
Thermal Properties
Thermal Conductivity
Thermal conductivity describes the ability of a material to conduct heat. It is required by power packages in order to dissipate heat and maintain stable electrical performance. Thermal conductivity units are [W/(m K)] in the SI system and [Btu/(hr ft °F)] in the Imperial system.
0.19 W/m.K

Additional Information

Technical properties

As-supplied / before-processing properties

PropertyValueUnitMethod / condition
Chemical compositionAcrylic-Uncured material
Viscosity50,000 at 2 rpm; 20,500 at 20 rpmcPUncured material; 25 deg C
Specific gravity1.1-Uncured material
Storage temperature5 to 25deg CManufacturer storage guidance
Technical properties

After-processing / final-state properties

PropertyValueUnitMethod / condition
Break torque10N mTypical cured material; M10 steel; ISO 10964
Prevailing torque5N mTypical cured material; M10 steel; ISO 10964
Shear strength5MPaTypical cured material; steel collar and pin; ISO 10123

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