SEALGUARD VFI®-994 Clear Silicone Sealer

SEALGUARD VFI®-994 Clear Silicone Sealer forms a seamless film using silicone chemistry. SEALGUARD VFI-994 provides UV stability and a waterproofing membrane in a single component package that cures at room temperature (RTV) and may be applied on site. SEALGUARD VFI-994 is a moisture cure elastomer specifically engineered for breathability and waterproofing that is resistant to oxidation and high temperatures.

Clear silicone skylight sealant that provides a waterproofing silicone membrane and is opaque.

Features & Benefits

  • Single Component, Seamless Film with UV Stability
  • Superior Flexibility, Build Up, and Adhesion
  • Resistant to Oxidation and High Temperatures
  • Lower VOC Compliant Content Measuring <50 g/L
  • Exceptional Durability from a Trusted Manufacturer

Application Methods:

  • Brush
  • Roll

Available Packaging:

  • 5 Gallon
  • 1 Gallon

Product Details

  • Product Color: Standard color available is Clear. For additional premium colors or color matching services contact Volatile Free, Inc.
  • UV Stability: This product is UV color stable. For additional information contact Volatile Free, Inc.
  • Coverage/Thickness Requirement: See VFI specifications for specific coverage information or contact Volatile Free, Inc. for additional coverage/thickness requirements.
  • Storage Stability/Shelf Life: 12-month shelf life from date of manufacture when stored and sealed in unopened containers between 40°F - 75°F. Opened containers may be resealed with a nitrogen purge, but shelf life will be significantly shortened. Material should be brought to a minimum temperature of 65°F before use.
  • Equipment: SealGuard 994 Silicone may be applied by sprayer, roller, or brush. If sprayed use single component spray equipment capable of maintaining a minimum constant spray pressure of 5000 psi. 5:1 transfer pump should be used with drums. Contact Volatile Free, Inc. for more information on any specific equipment questions and requirements.
  • Surface Preparation: Surface preparation depends on application and substrate being coated. All surfaces should be cleaned, prepped and free of any oils, dirt or films that could affect the product's adhesion. Contact Volatile Free Inc. with any additional questions.
  • Mixing: Mixing until uniform is required on all material before use. Mix times may vary depending on volume and mixing method, please contact Volatile Free, Inc. for more information on any specific mixing questions and requirements.
  • Material Application: Material can be applied between 40°F - 120°F. Standard application is a multiple coat method with 22 mil passes until the desired thickness is reached. Apply only when rain or other moisture contamination will not be present before fully cured. The time between subsequent coats should not exceed 48 hours, but materials should be allowed to cure before applying the second coat. Material cure time will vary with temperature.
  • Primers: Volatile Free, Inc. recommends adhesion patch testing before use on any unknown substrate. SealGuard 994 is not recommended when a primer is necessary.
  • Cleanup: Preferred clean-up solvent is chemically dry mineral spirits. Please contact Volatile Free, Inc. for more information on clean-up of equipment and tools.
  • Thinning: Do not thin prior to application.
  • Precautions: See Safety Data Sheet for complete safety data. Do not add any foreign material to this product. Avoid prolonged breathing of vapors and prolonged or repeated skin contact. Use only with adequate ventilation.

SEALGUARD VFI®-994 Clear Silicone Sealer Physical Properties

  • Hardness Shore A (ASTM B-2240): 55
  • Tensile Strenth (ASTM D-412): 300 psi
  • Elongation (ASTM D-412): 170%
  • Tear Strength (ASTM D-624): 21 pli

SEALGUARD VFI®-994 Clear Silicone Sealer Liquid Properties

  • Solids by Weight (ASTM D 1644): 94.00%
  • Solids by Volume (ASTM D2697): 94.00%
  • Liquid Density (ASTM D 2939): 8.15 lbs/gal
  • Specific Gravity: 0.98 g/mL
  • Viscosity (ASTM D2196): 13000 cps
  • Tack Free Time: 2-3 hours @75°F, 50% RH
  • Cure Time: 3-6 hours @75°F, 50% RH
  • Recoat Time: 4-48 hours @75°F, 50% RH
  • Flash Point (ASTM D-56): 187°F
  • VOC: 46 g/L

Systems Used In


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Product Data Sheets