Mastic sealant

Product details

Ameetuff mastic sealant is a flexible fire-resistive elastomeric finish primarily used with low-temperature insulation to prevent migration of water and water vapor into the insulation system through butt joints.

It is also recommended as a bedding compound for cellular glass insulation installation. In this use case, it helps protect insulation from abrasion and metal surfaces from corrosion while supporting fire-protection performance for thermal-insulation systems. It is suitable as a vapor barrier finish for fittings and for outdoor applications where good color retention, chemical resistance, and durability are required.

Mastic sealant provides strong weather barrier and vapor barrier protection for most board stock thermal insulations except polystyrene. It normally bonds well to aluminum foil facings; test application is recommended to confirm adhesion.

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Industrial Applications and Selection Support

For projects requiring mastic sealant supplier, fire-resistive elastomeric finish manufacturer, vapor barrier sealant price, and insulation joint coating support, Ameetuff provides project inquiry and technical evaluation.

Share insulation type, application area, service climate, and site conditions for suitable system recommendation and procurement support.

Quotation and Datasheet Support

Request quote and supply details

Provide insulation system type, area, and project location for pricing support.

Ask for datasheet

Get application guidance for butt joints, fittings, and vapor barrier finishing.

Confirm compatibility

Validate adhesion and service suitability before full-scale application.

Technical datasheet evidence

Fire Sealant and Gasket Datasheets

These gasket and duct joint sealant datasheets support sealant selection where fire resistance, air leakage control, vapor sealing and high temperature service conditions are important.

ARC 317

Duct Fire Resistant Ceramic Gasket and Sealant

Fire and thermal insulation ceramic gasket and sealant for duct, pipeline and high temperature joint areas.

Recommended use: Duct joints, pipeline joints and sealing areas where air leakage, vapor leakage and heat transfer need to be controlled.
Fire test / standards mentioned: TDS presents ARC 317 as a fire resistant ceramic gasket and sealant for duct and pipeline joint use.
Fire protection note: TDS notes operating temperature up to 1000 C and fire retardant properties for 2 to 4 hours, depending on sealing and installation.
Application method: Fix on duct, pipeline and joint areas as per project size, thickness and sealing requirement.

Colour Off white or grey

Thickness As per requirement

Size As per requirement

Density 12.5 PCF

Tensile strength Less than 5%

Thermal conductivity 0.24 to 1.18

Break strength 24.65 PSI

Fire retardant property 2 to 4 hours

ARC 244

Fire Retardant Duct Joint Sealant

Silicon polymer based flexible fire resistant elastomeric sealant for duct joints and insulation systems.

Recommended use: Metal to metal duct joints, duct air flow insulation systems, thermal insulation joints and areas needing chemical and corrosion protection.
Fire test / standards mentioned: TDS mentions water vapor and air transmission as per ASTM E96 with value less than 0.01 perm.
Fire protection note: TDS notes fire retardant properties for 2 to 4 hours and temperature resistance up to 800 C to 900 C.
Application method: Apply by spatula on duct joints and sealing areas after cleaning the surface and confirming fit for the joint condition.

Colour Off white, black or grey

Specific gravity 1.29

Drying time 3 to 4 hours

Complete hard dry 48 hours

Chemical nature Silicon polymer compound

Particle size Less than 5 micron

Water resistance Good

Storage life 9 months

Final coating build, gasket thickness, sealant consumption, surface preparation and fire rating should be confirmed against duct size, joint detail, site condition and approving authority requirements.

Mastic Sealant (Atpi-Spmsx-5015)

Mastic Sealant