Dow Dowsil 730 FS Solvent Resistant Sealant

Dow Dowsil 730 FS Solvent Resistant Sealant Datasheet
  • Description for Dow Dowsil 730 FS Solvent Resistant Sealant

    One-component fluorosilicone adhesive/sealant, Cures at room temperature, Non-sag, paste consistency, For assembling and/or repairing of fuel systems and tanks.

    *See Terms of Use Below

    Brand Dowsil
    Application Type Bond, Repairing, Sealant, Gasketing: Formed in-place-Gaskets
    1 Part or 2 Part 1 Part
    Material Form Non-slump paste
    Substrate Many common engineering plastics, Metals, Glass
    Industry Transformers, Small engines, Rockets, Automotive, Aircraft, E-Mobility Solutions, Airbag, Powertrain, Aerospace
    Manufacturer Dow
    Chemistry Silicone: Fluorosilicone Rubber
    Application Method Spatula
    Cure Method Moisture, Cures at room temperature
    Cure Temperature (°C) 20 to 25 Room temperature, 23
    Cure Time (min) 1,440, 10,080
    Viscosity (cPs) Non-sag, Nonslumping paste, Controlled, NonFlow
    Color White
    Arc Resistance (sec) Arc Resistance
    Ozone Resistance Good ozone resistance
    Chemical Resistance Fuels, Oils
    Relative Solvent Resistance Chemical Resistance: Solvent
    High Temperature Resistance (°C) 260
    Low Temperature Resistance (°C) -65
    Extrusion Rate 321 (g/minute)
  • Technical Data for Dow Dowsil 730 FS Solvent Resistant Sealant

    Overview
    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 1 Part
    • Material Form
      • Paste - Non-slump paste
    • Substrate
      • Glass
      • Metal - Metals
      • Plastic - Many common engineering plastics
      • Other - Many substrates, Overhead surfaces, Vertical surfaces
    • Industry
      • Other Transportation - Fuel lines
      • Automotive
      • E-Mobility Solutions
      • Airbag
      • Powertrain
      • Aerospace - Rockets
      • Aircraft
      • Transformers
      • Industrial - Pipe joints on lines carrying solvents
      • Engine - Small engines
      • Other - Formed-in-place gaskets where irregular shapes and harsh conditions reject ordinary seal, Formed-in-place gaskets for sealing chemical compressors, Tanks, Various liquid storage tanks, Assembling fuel systems, Repairing of fuel systems
    • Chemistry
      • Silicone: Fluorosilicone - Fluorosilicone Rubber
    • Application Method
      • Spatula/Trowel - Spatula
    • Cure Method
      • Room Temperature / Air Dry - Cures at room temperature
      • Moisture / Condensation Cure - Moisture
    • Color
      • White
    • Brand
      • Dowsil
    • Also Known As
      • Old Name - 730 Solvent Resistant Sealant
    Specifications
    Cure Specs
    Cure Temperature (°C) 20 to 25 Room temperature, 23 Test Method
    Cure Time (min) 1,440, 10,080 Test Method
    Viscosity (cPs) Non-sag, Nonslumping paste, Controlled, NonFlow
    Tack Free Time (min) 14 Test Method
    Work / Pot Time (min) 12 Test Method
    Bond Strength
    Peel Strength (piw) 6.8 (kN/m) Test Method
    Tear Strength (piw) 11.91 (kN/m), 26.97 (kN/m), 9.11 (kN/m), 8.93 (kN/m), 11.91 (kN/m), 9.28 (kN/m), 8.73 (kN/m), 8.41 (kN/m), 8.06 (kN/m), 9.63 (kN/m) , 0 11.9 (kN/m) Test Method
    Tensile Strength (psi) 3.0 (Mpa), 2.99 (Mpa), 3.38 (Mpa), 3.14 (Mpa), 3.03 (Mpa), 2.98 (Mpa), 2.99 (Mpa), 3.03 (Mpa), 2.65 (Mpa), 2.62 (Mpa), 2.25 (Mpa) Test Method
    Material Resistance
    Arc Resistance (sec) Arc Resistance
    Ozone Resistance Good ozone resistance
    Chemical Resistance Fuels, Oils
    Relative Solvent Resistance Chemical Resistance: Solvent
    Environmental Resistance Good
    High Temperature Resistance (°C) 260 Test Method
    Low Temperature Resistance (°C) -65 Test Method
    Moisture/Humidity Resistance Good
    Vibration Resistance/Shock Resistance Vibration, Shock
    Conductivity
    Dissipation Factor 0.00430 Test Method
    Dielectric Strength (V/mil) 372 Test Method
    Dielectric Constant 7.10 Test Method
    Volume Resistivity (O) 5.1 e13 (ohms/cm) Test Method
    Hardness
    Shore A Hardness 40 Test Method
    Elongation (%) 195 Test Method
    Flexibility Flexible
    Other Properties
    Extrusion Rate 321 (g/minute)
    Specific Gravity 1.440 Test Method
    Flash Point (°F) 213.8
    Business Information
    Shelf Life Details When stored at or below 32°C (90°F) in the original unopened containers, DOWSIL 730 FS Solvent Resistant Sealant has a usable life of 18 months from the date of production.As DOWSIL730 FS Solvent Resistant Sealant cures by reaction with moisture in air, keep the container tightly sealed when not in use. A plug of used material may form
    Shelf Life Temperature (°F) <90
    Shelf Life Type From date of manufacture
    Shelf Life (mon) 18
    Not Good For
    Don't Use With concrete, brick, mortar, other masonry surfaces, surfaces to be painted, impregnated woods, oil-based caulks that bleed oils, polyethylene, polypropylene, methylmethacrylate, On or near sensitive metals, copper, brass, zinc, carbon steel, galvanized iron, magnesium
  • Best Practices for Dow Dowsil 730 FS Solvent Resistant Sealant

    *See Terms of Use Below

    1. Application

      Apply DOWSIL 730 FS Solvent Resistant Sealant to one of the prepared surfaces then quickly cover with the other substrate to be bonded. On exposure to moisture, the freshly applied material will "skin-over" in about 12 minutes at room temperature and 50% relative humidity. Any tooling should be completed before this skin forms. The surface is easily tooled with a spatula. The adhesive/sealant will be tack-free in about 14 minutes.

    2. Surface Preparation

      All surfaces must be clean and dry. Degrease and wash off any contaminants that could impair adhesion. Suitable solvents include isopropyl alcohol, acetone or methyl ethyl ketone.

    3. Curing

      Cure time is affected by relative humidity, degree of confinement and cross-sectional thickness of the sealant. Sections up to 1/8-inch thick become rubbery solids in about 24 hours at room temperature at 50 percent relative humidity. Higher humidity reduces cure time slightly.

    4. Curing

      After skin formation, cure continues inward from the surface. In 24 hours (at room temperature and 50% relative humidity) DOWSIL 730 FS Solvent Resistant Sealant will cure to a depth of about 3mm. Very deep sections, especially when access to atmospheric moisture is restricted, will take longer to cure completely. Cure time is extended at over humidity levels

  • Comparable Materials for Dow Dowsil 730 FS Solvent Resistant Sealant

    *See Terms of Use Below

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Cure Temperature Test Methods
Cure Temperature Cure Time Test Method
20 to 25°C Room temperature 50% relative humidity
23°C As cured 7 days at 77°F (25°C) and 50% RH
Cure Time Test Methods
Cure Time Test Method
1,440 min 50% relative humidity
10,080 min As cured 7 days at 77°F (25°C) and 50% RH
Tack Free Time Test Methods
Tack Free Time Test Method
14 min CTM 0095
Work / Pot Time Test Methods
Work / Pot Time Test Method
12 min CTM 0098, Skin-over time
Tensile Strength Test Methods
Tensile Strength Cure Time Cure Temperature Cure Humidity Test Temperature Test Method
3.0 (Mpa) 10,080 min 25°C 50 % 20 to 25°C CTM 0137A, 50% relative humidity
2.99 (Mpa) 0.00 min 149°C 20 to 25°C Tested at Room Temperature After Exposure at 300°F (149°C), These values are not intended for use in preparing specifications.
3.38 (Mpa) 1,440 min 149°C 20 to 25°C Tested at Room Temperature After Exposure at 300°F (149°C), These values are not intended for use in preparing specifications.
3.14 (Mpa) 4,320 min 149°C 20 to 25°C Tested at Room Temperature After Exposure at 300°F (149°C), These values are not intended for use in preparing specifications.
3.03 (Mpa) 10,080 min 149°C 20 to 25°C Tested at Room Temperature After Exposure at 300°F (149°C), These values are not intended for use in preparing specifications.
2.98 (Mpa) 20,160 min 149°C 20 to 25°C Tested at Room Temperature After Exposure at 300°F (149°C), These values are not intended for use in preparing specifications.
2.99 (Mpa) 0.00 min 204°C 20 to 25°C Tested at Room Temperature After Exposure at 400°F (149°C), These values are not intended for use in preparing specifications.
3.03 (Mpa) 1,440 min 204°C 20 to 25°C Tested at Room Temperature After Exposure at 400°F (149°C), These values are not intended for use in preparing specifications.
2.65 (Mpa) 4,320 min 204°C 20 to 25°C Tested at Room Temperature After Exposure at 400°F (149°C), These values are not intended for use in preparing specifications.
2.62 (Mpa) 10,080 min 204°C 20 to 25°C Tested at Room Temperature After Exposure at 400°F (149°C), These values are not intended for use in preparing specifications.
2.25 (Mpa) 840 min 204°C 20 to 25°C Tested at Room Temperature After Exposure at 400°F (149°C), These values are not intended for use in preparing specifications.
Peel Strength Test Methods
Peel Strength Cure Time Cure Temperature Cure Humidity Substrate Test Method
6.8 (kN/m) 10,080 min 25°C 50 % Aluminum Alloy Alcad 2024T3, with Dow corning 1200 RTV prime coat CTM 0293
Tear Strength Test Methods
Tear Strength Cure Time Cure Temperature Cure Humidity Test Time Test Temperature Test Method
11.91 (kN/m) 149°C 50 % 20 to 25°C Tested at Room Temperature After Exposure at 300°F (204°C)
26.97 (kN/m) 1,440 min 149°C 20 to 25°C Tested at Room Temperature After Exposure at 300°F (149°C)a
9.11 (kN/m) 4,320 min 149°C 4,320 min 20 to 25°C Tested at Room Temperature After Exposure at 300°F (149°C)
8.93 (kN/m) 10,080 min 149°C 10,080 min 20 to 25°C Tested at Room Temperature After Exposure at 300°F (149°C)
11.91 (kN/m) 20,160 min 149°C 20,160 min 20 to 25°C Tested at Room Temperature After Exposure at 300°F (149°C)
9.28 (kN/m) 0.00 min 204°C 1,440 min 20 to 25°C Tested at Room Temperature After Exposure at 400°F (149°C)
8.73 (kN/m) 1,440 min 204°C 4,320 min 20 to 25°C Tested at Room Temperature After Exposure at 400°F (149°C)
8.41 (kN/m) 4,320 min 204°C 20,160 min 20 to 25°C Tested at Room Temperature After Exposure at 400°F (204°C)
8.06 (kN/m) 204°C Tested at Room Temperature After Exposure at 400°F (149°C) 20 to 25°C
9.63 (kN/m) 10,080 min 204°C 20 to 25°C Tested at Room Temperature After Exposure at 400°F (149°C)
0 piw 11.9 (kN/m) 20,160 min 25°C 20 to 25°C CTM 1112
High Temperature Resistance Test Methods
High Temperature Resistance Test Method
260°C Stable and flexible
Low Temperature Resistance Test Methods
Low Temperature Resistance Test Method
-65°C Stable and flexible
Dielectric Constant Test Methods
Dielectric Constant Temperature Test Method
7.10 25°C D150, after 7 days cure in air at 25ºC (77ºF) and 50% relative humidity, These values are not intended for use in preparing specifications.
Dielectric Strength Test Methods
Dielectric Strength Temperature Test Method
372 V/mil 25°C CTM 0114, As Cured 7 Days at 77°F (25°C) and 50% RH, These values are not intended for use in preparing specifications.
Dissipation Factor Test Methods
Dissipation Factor Test Method
0.00430 D150, after 7 days cure in air at 25ºC (77ºF) and 50% relative humidity, These values are not intended for use in preparing specifications.
Volume Resistivity Test Methods
Volume Resistivity Temp (°C) Test Method
5.1 e13 (ohms/cm) 25°C D150,after 7 days cure in air at 25ºC (77ºF) and 50% relative humidity, These values are not intended for use in preparing specifications.
Elongation Test Methods
Elongation Test Method
195 % CTM 0137A
Shore A Hardness Test Methods
Shore A Hardness Shore Hardness Test Method Hardness Temperature
40 D2240 , Cured 7 Days at 77°F (25°C) and 50% RH 25°C
Specific Gravity Test Methods
Specific Gravity Temperature Test Method
1.440 25°C 0022,D792, values are not intended for use in preparing specifications.