DowIcon_Default_EventsAsset 105 chart_icon form-checkmark form-radio__bullet cog icon profile-icon-header profile-locked-icon-header cart-icon-header region-icon-header nav_call home_sds homepage_hero_new--rollover list-bullet nav-close nav-close nav-hamburger nav-right-arrow--mobile nav_brochures nav_call nav_cart nav_case_studies nav_check_mark nav_close_x nav_common_questions nav_distributor nav_driving_directions nav_exclamation_point nav_external_links nav_find_formulations nav_find_products nav_info nav_learn_how_to_use nav_literature nav_lock nav_map nav_media_center nav_pdf nav_quick_checkout nav_read_latest_news nav_sample nav_selection_guides nav_tooltip nav_white_papers noav-icon-safe-handling-18x18 pdp-add_part_number pdp-arrow--left pdp-arrow--right pdp-box Funnel pdp-list_collapse pdp-list_expand Vector Smart Object12 Vector Smart Object12 pdp-shopping_cart social_facebook social_google social_linkedin social_pinterest social_rss social_twitter social_youtube utility-search utility-tooltip voc_icon
[{"values":[{"value":"Português-Portuguese","languageCode":"pt-br","link":"javascript:void(0);"},{"value":"日本語-Japanese","languageCode":"ja-jp","link":"javascript:void(0);"},{"value":"中文-Chinese","languageCode":"zh-cn","link":"javascript:void(0);"},{"value":"English","languageCode":"en-us","link":"javascript:void(0);"},{"value":"Español-Spanish","languageCode":"es-es","link":"javascript:void(0);"},{"value":"한국어-Korean","languageCode":"ko-kr","link":"javascript:void(0);"}],"label":"BR","default":"pt-br"},{"values":[{"value":"Português-Portuguese","languageCode":"pt-br","link":"javascript:void(0);"},{"value":"日本語-Japanese","languageCode":"ja-jp","link":"javascript:void(0);"},{"value":"中文-Chinese","languageCode":"zh-cn","link":"javascript:void(0);"},{"value":"English","languageCode":"en-us","link":"javascript:void(0);"},{"value":"Español-Spanish","languageCode":"es-es","link":"javascript:void(0);"},{"value":"한국어-Korean","languageCode":"ko-kr","link":"javascript:void(0);"}],"label":"JP","default":"ja-jp"},{"values":[{"value":"Português-Portuguese","languageCode":"pt-br","link":"javascript:void(0);"},{"value":"日本語-Japanese","languageCode":"ja-jp","link":"javascript:void(0);"},{"value":"中文-Chinese","languageCode":"zh-cn","link":"javascript:void(0);"},{"value":"English","languageCode":"en-us","link":"javascript:void(0);"},{"value":"Español-Spanish","languageCode":"es-es","link":"javascript:void(0);"},{"value":"한국어-Korean","languageCode":"ko-kr","link":"javascript:void(0);"}],"label":"CN","default":"zh-cn"},{"values":[{"value":"Português-Portuguese","languageCode":"pt-br","link":"javascript:void(0);"},{"value":"日本語-Japanese","languageCode":"ja-jp","link":"javascript:void(0);"},{"value":"中文-Chinese","languageCode":"zh-cn","link":"javascript:void(0);"},{"value":"English","languageCode":"en-us","link":"javascript:void(0);"},{"value":"Español-Spanish","languageCode":"es-es","link":"javascript:void(0);"},{"value":"한국어-Korean","languageCode":"ko-kr","link":"javascript:void(0);"}],"label":"US","default":"en-us"},{"values":[{"value":"Português-Portuguese","languageCode":"pt-br","link":"javascript:void(0);"},{"value":"日本語-Japanese","languageCode":"ja-jp","link":"javascript:void(0);"},{"value":"中文-Chinese","languageCode":"zh-cn","link":"javascript:void(0);"},{"value":"English","languageCode":"en-us","link":"javascript:void(0);"},{"value":"Español-Spanish","languageCode":"es-es","link":"javascript:void(0);"},{"value":"한국어-Korean","languageCode":"ko-kr","link":"javascript:void(0);"}],"label":"ES","default":"es-es"},{"values":[{"value":"Português-Portuguese","languageCode":"pt-br","link":"javascript:void(0);"},{"value":"日本語-Japanese","languageCode":"ja-jp","link":"javascript:void(0);"},{"value":"中文-Chinese","languageCode":"zh-cn","link":"javascript:void(0);"},{"value":"English","languageCode":"en-us","link":"javascript:void(0);"},{"value":"Español-Spanish","languageCode":"es-es","link":"javascript:void(0);"},{"value":"한국어-Korean","languageCode":"ko-kr","link":"javascript:void(0);"}],"label":"KR","default":"ko-kr"}]

DOWSIL™ 791 Weatherproofing Sealant

A one-part, medium-modulus, elastomeric sealant designed for general weathersealing. It is a silicone formulation that cures to a flexible and curable silicone rubber building joint seal.

Uses:

  • General glazing and weather sealing in curtain wall and building facades

Benefits:

  • Ease of application – ready to use as supplied
  • Excellent rheology, low string upon gunning
  • Excellent weatherability, virtually unaffected by sunlight, rain, snow, ozone
  • Neutral cure
  • Low odor

Properties

These values are not intended for use in preparing specifications.

Typical Properties

  • Adhesion to Yes No Alodine Aluminum, Aluminum, Anodized Aluminum, Brickwork, Concrete, Enamelled and Reflective Glass, Extruded Mill Finish, Fluorocarbon Coated Aluminum, Glass, Granite, Heat Strengthened Glass, Light-Weight Stone Panels, Limestone, Low E Coated Glass, Marble, Masonry, Metal, Metal Panels, Paint, Plastic, Polyester Powder Coated Aluminum/Steel, Silicone, Stainless Steel, Steel, Stone, Vinyl/PVC-U, Wood
  • Appearance Yes No Opaque
  • Application Temperature Range Yes No 4 to 40 °C
  • Chemistry Yes No Neutral
  • Color Yes No Black, Bronze, Custom, Dark Grey, Grey, Limestone, Metal Grey, Precast White, White
  • Cure System Yes No 1-Part Cure
  • Durometer - Shore A Yes No 25 to 30 Shore A
  • Flow Yes No NonSag
  • Flow/Sag (Slump) Yes No 0 mm
  • Movement Yes No Medium
  • Movement Capability Yes No -50 to 50 %
  • Primerless Adhesion Yes No Primerless
  • Room Temperature Cure - Days Yes No 7 to 14 Days
  • Service Temperature High Yes No 150 °C
  • Service Temperature Low Yes No -50 °C
  • Specific Gravity @ 25°C Yes No 1.51
  • Substrate Yes No Non-porous
  • Tack-Free Time-50% RH Yes No 45 Minutes
  • Tensile Adhesion (T/A) Yes No 120 psi
  • Volatile Organic Content Yes No 45 g/liter
  • Where Used Yes No Job Site
  • Working Time Yes No 20 Minutes
Solid weatherproofing performance at outstanding value

Solid weatherproofing performance plus outstanding silicone sealant value

One of the most economical options for quality silicone weathersealing, DOWSIL™ 791 Silicone Weatherproofing Sealant is a neutral-cure, one-part sealant that quickly cures to a durable, flexible seal that can accommodate significant joint movement. Especially suited for perimeter sealing around doors and windows, it's also excellent for sealing expansion and control joints, precast concrete panels, curtainwall and mullion joints, and internal seals and end dams.

New Submittal Generator Tool
Download and organize your submittal documents. (Available in N. America)

No Safety Data Sheets are available online for this material
Please Contact Dow for additional information.

No Food Contact Letters are available online for this material
Please Contact Dow for additional information.

No sales specification could be found for this material in selected language

DOWSIL™ 791 Weatherproofing Sealant
No Technical Data Sheets are available online for this material.
Please Contact Dow for additional information.

CHOOSE
CHOOSE
CHOOSE

No Regulatory Data Sheets are available online for this product.
Please Contact Dow for additional information.

DOWSIL™ 791 Weatherproofing Sealant
Please Contact Dow for distribution options available for this product.