Difference between revisions of "Dowsil silicone sealants"

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==Description==     
 
==Description==     
  
[Dow] Dow produces numerous types of one-part, neutral-cure [[silicone]] material that can be used as adhesives/sealants. These room temperature vulcanizing (RTV) silicones were introduced in the 1960s and cure upon exposure to atmospheric moisture.  They have been used for case manufacturing in case construction and mount fabrication.
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[Dow] Dow produces numerous types of one-part, neutral-cure [[silicone sealant:Silicone]] materials that can be used as adhesives/sealants. These room temperature vulcanizing (RTV) silicones were introduced in the 1960s and cure upon exposure to atmospheric moisture.  There are two type of neutral cure RTS silicones.  The first if an alkoxy neutral-cure that releases methanol upon cure.  The alkoxy neutral cure silicones are considered suitable for use on all types of metal without risk of corrosion.  The second type is an oxime neutral-cure silicones that releases methyl ethyl ketoxime.  These withstand temperature better than alkoxy-cure but can cause stress-cracking in some plastic boards, such as polycarbonate and acrylics.
Their general properties include:  
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* Stability over a wide temperature range – When fully cured, many of our products can be used at temperatures ranging from -85° to 599°F (-65° to 315°C).
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General properties for Dowsil silicones include:  
 +
* Stability over a wide temperature range – When fully cured, most can be used at temperatures ranging from -85° to 599°F (-65° to 315°C).
 
* Weather resistance – High resistance to UV rays, radiation and weather prevents our products from hardening, cracking, crumbling, drying and becoming brittle.
 
* Weather resistance – High resistance to UV rays, radiation and weather prevents our products from hardening, cracking, crumbling, drying and becoming brittle.
* Chemical stability – Our sealants do not readily degrade, even under long-term exposure to many chemicals and atmospheric pollutants.
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* Chemical stability – Do not readily degrade, even under long-term exposure to many chemicals and atmospheric pollutants.
* Good bond strength – Our products provide good adhesion to a wide variety of industrial materials, including glass, ceramics and wood masonry; painted surfaces; and many metals and plastics.
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* Good bond strength – Provide good adhesion to a wide variety of industrial materials, including glass, ceramics and wood masonry; painted surfaces; and many metals and plastics.
* Electrical properties – Designed for a variety of applications, our products can be used in various electrical and electronic applications, including devices that are thermally cycled over a wide temperature range.
 
 
* Low flammability – In fire conditions, silicone adhesives/sealants are reluctant to burn. Many products comply with UL flammability standards.
 
* Low flammability – In fire conditions, silicone adhesives/sealants are reluctant to burn. Many products comply with UL flammability standards.
  
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! Commercial name
 
! Commercial name
! Manufacturer
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! Cure type
! Polymer type
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! Properties
! MWG other comments
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! Features (comments)
! Applications & Working Properties
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! Applications
! Manufacturers listed Applications
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! Characteristics and Risks
! Maufacturers Descriptions (Characteristics and Risks)
 
 
! Oddy tests
 
! Oddy tests
 
! Product website
 
! Product website
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|-
 
|-
 
| Dowsil 580 Neutral cure
 
| Dowsil 580 Neutral cure
| Dow Corning
 
 
| Silicone; oxime neutral cure; one component
 
| Silicone; oxime neutral cure; one component
 
|  
 
|  
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| AWMM 2007 (T); AWMM 2008 (T)
 
| AWMM 2007 (T); AWMM 2008 (T)
 
| [https://www.dow.com/en-us/pdp.dowsil-580-glass-metal-and-masonary-sealant.04000651h.html#overview Dowsil 580]
 
| [https://www.dow.com/en-us/pdp.dowsil-580-glass-metal-and-masonary-sealant.04000651h.html#overview Dowsil 580]
| Silicone elastomer (with petroleum distillates, 2-Butanone (methylsilylidyne)trioxime; N-(3-(Trimethoxysilyl) propyl)-1,2-<br />ethanediamine; Vinyltri (methylethylketoxime) silane; Bis[(2-ethyl-2,5-dimethylhexanoyl)oxy](dimethyl)stannane)
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| Silicone elastomer (with petroleum distillates, 2-Butanone (methylsilylidyne)trioxime; N-(3-(Trimethoxysilyl) propyl)-1,2-<br />ethanediamine; Vinyltri (methylethylketoxime) silane; Bis[(2-ethyl-2,5-dimethylhexanoyl)oxy](dimethyl)stannate)
 
|-
 
|-
 
| Dowsil 737 Neutral Cure
 
| Dowsil 737 Neutral Cure
| Dow Corning
 
 
| Silicone; oxime neutral cure; one component
 
| Silicone; oxime neutral cure; one component
 
|  
 
|  
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| MMA 2016 (U); BKM 2017 (U); BKM 2018 Px4) BKM 2018 (U)
 
| MMA 2016 (U); BKM 2017 (U); BKM 2018 Px4) BKM 2018 (U)
 
| [https://www.dow.com/en-us/pdp.dowsil-737-neutral-cure-sealant.04098499h.html#properties Dowsil 737]
 
| [https://www.dow.com/en-us/pdp.dowsil-737-neutral-cure-sealant.04098499h.html#properties Dowsil 737]
| Silicone elastomer( 2-Butanone (methylsilylidyne)trioxime; N-(3-(Trimethoxysilyl) propyl)-1,2-<br />ethanediamine; Vinyltri (methylethylketoxime) silane; Bis[(2-ethyl-2,5-dimethylhexanoyl)oxy](dimethyl)stannane)
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| Silicone elastomer( 2-Butanone (methylsilylidyne)trioxime; N-(3-(Trimethoxysilyl) propyl)-1,2-<br />ethanediamine; Vinyltri (methylethylketoxime) silane; Bis[(2-ethyl-2,5-dimethylhexanoyl)oxy](dimethyl)stannate)
 
|-
 
|-
 
| Dowsil 739 RTV
 
| Dowsil 739 RTV
| Dow Corning
 
 
| Silicone; moisture cure; one component
 
| Silicone; moisture cure; one component
 
|  
 
|  
 
|  
 
|  
| Adheres well to unprimed metals, ceramis and glass and some plastics; does not adhere to teflon, polyethylene, polypropylene, or highly plasticized plastics or rubbers.
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| Adheres well to unprimed metals, ceramics and glass and some plastics; does not adhere to Teflon, polyethylene, polypropylene, or highly plasticized plastics or rubbers.
 
| Single component, moisture cure, RTV with good adhesion; normally sold in syringes and cartridges;
 
| Single component, moisture cure, RTV with good adhesion; normally sold in syringes and cartridges;
 
| MMA 2016 (P)
 
| MMA 2016 (P)
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| Silicone elastomer
 
| Silicone elastomer
 
|-
 
|-
| Dowsil 791 WeatherproofSealant
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| Dowsil 791 Weatherproof Sealant
| Dow Corning
 
 
| Silicone; moisture cure; one component
 
| Silicone; moisture cure; one component
| this is the one that Click Netherfield likes; white version is unsuitable (Oddy); Goppion uses this for 99% of projects, they use only black, grey, sometimes white; Goppion uses this due to good Met Oddy results
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|  
| good for inside display envelope: glass and metal joins; glass and glass joins; Goppion uses black, grey, white due to aesthetic reasons...transparent caulks yellow within 5 years
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| good for inside display envelope: glass and metal joins; glass and glass joins; Goppion uses black, grey, white due to aesthetic reasons (transparent caulks yellow within 5 years)
| General weathersealing joints; glazing and curtain wal seals; builing façade seals
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| General weather-sealing joints; glazing and curtain wall seals; building façade seals
| Single component, neutral curing silicone elastomeric sealant for weathersealing applications;
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| Single component, neutral curing silicone elastomeric sealant for weather-sealing applications;
| MMA 2016 (T); AMNH 2019 (Tx2); MMA 2021 (T); is white unsuitable? what about other colors?
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| MMA 2016 (T); AMNH 2019 (Tx2); MMA 2021 (T); white is unsuitable
 
| https://www.dow.com/en-us/pdp.dowsil-791-weatherproofing-sealant.04082594h.html#overview
 
| https://www.dow.com/en-us/pdp.dowsil-791-weatherproofing-sealant.04082594h.html#overview
 
| Silicone elastomer
 
| Silicone elastomer
 
|-
 
|-
 
| Dowsil 795 Building Sealant
 
| Dowsil 795 Building Sealant
| Dow Corning
 
 
| Silicone; moisture cure; one component
 
| Silicone; moisture cure; one component
 
|  
 
|  
| Click Netherfield does not like to use this due to workability; extra thick; skins over too quickly
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| extra thick; skins over too quickly
 
| Structural and nonstructural glazing; for most new construction and remedial sealing applications; weather sealing of most common construction materials including glass, aluminum, steel, painted metal, EIFS, granite and other stone, concrete, brick and plastics
 
| Structural and nonstructural glazing; for most new construction and remedial sealing applications; weather sealing of most common construction materials including glass, aluminum, steel, painted metal, EIFS, granite and other stone, concrete, brick and plastics
| Single component, neutral curing; Highly resistant to weather, UV and temperature extremes; adheres to wide wariety of materisls; not recommended for water immersion, or wet or cold surfaces; not  paintable
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| Single component, neutral curing; Highly resistant to weather, UV and temperature extremes; adheres to wide variety of materials; not recommended for water immersion, or wet or cold surfaces; not  paintable
 
| AWMM 2008 (U); MMA 2016 (Px2); MMA 2020 (Ux2);  MMA 2021 (T)
 
| AWMM 2008 (U); MMA 2016 (Px2); MMA 2020 (Ux2);  MMA 2021 (T)
 
| https://www.dow.com/en-us/pdp.dowsil-795-silicone-building-sealant.01595717z.html#tech-content
 
| https://www.dow.com/en-us/pdp.dowsil-795-silicone-building-sealant.01595717z.html#tech-content
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|-
 
|-
 
| Dowsil 9-1374 Silicone sealant
 
| Dowsil 9-1374 Silicone sealant
| Dow Corning
 
 
| Silicone; alkoxy neutral cure; one component
 
| Silicone; alkoxy neutral cure; one component
 
|  
 
|  
 
|  
 
|  
| Used for formed in place glaskets; provides strong flexible bond for movalble or expanding joints, such as when bonding<br />materials with different thermal expansion rates such as glass to metal, or glass to plastic or metal to plastic
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| Used for formed in place gaskets; provides strong flexible bond for movable or expanding joints, such as when bonding materials with different thermal expansion rates such as glass to metal, or glass to plastic or metal to plastic
 
| Single component, translucent, RT, alkoxy neutral moisture cure, silicone sealant.
 
| Single component, translucent, RT, alkoxy neutral moisture cure, silicone sealant.
 
| MMA 2016 (Tx2)
 
| MMA 2016 (Tx2)
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|-
 
|-
 
| Dowsil 3145 RTV Mil-A-46146 Adhesive / Sealant
 
| Dowsil 3145 RTV Mil-A-46146 Adhesive / Sealant
| Dow Corning
 
 
| Silicone; moisture cure; one component
 
| Silicone; moisture cure; one component
|  
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| Skin-over time = 15 min;
 
| may be hard to work with (one anecdote of it being very hard to work with); requires experienced person to apply and clean up; viscous, does not flow
 
| may be hard to work with (one anecdote of it being very hard to work with); requires experienced person to apply and clean up; viscous, does not flow
| Sealing openings in modules and housings; <br />Adding mechanical stability to individual components; adheres to glass and nylon
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| Sealing openings in modules and housings; Adding mechanical stability to individual components; adheres to glass and nylon
 
| Good adhesion to many reactive metals, ceramics and glass, as well as to selected laminates, resins and plastics. However, good adhesion cannot be expected on non-reactive metal substrates or non-reactive plastic<br />surfaces such as Teflon, polyethylene or polypropylene.
 
| Good adhesion to many reactive metals, ceramics and glass, as well as to selected laminates, resins and plastics. However, good adhesion cannot be expected on non-reactive metal substrates or non-reactive plastic<br />surfaces such as Teflon, polyethylene or polypropylene.
 
| AWMM 1988 (P); BKM 2016 (Px2); BKM 2017 (Px2); AWNH 2019 (T)
 
| AWMM 1988 (P); BKM 2016 (Px2); BKM 2017 (Px2); AWNH 2019 (T)
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|-
 
|-
 
| Dowsil 7091 Adhesive Sealant
 
| Dowsil 7091 Adhesive Sealant
| Dow Corning
 
 
| Silicone; moisture cure; one component
 
| Silicone; moisture cure; one component
 +
| Skin-over time = 15 min;
 
| Click Netherfield mentioned this one as one they use
 
| Click Netherfield mentioned this one as one they use
|
 
 
| for applications which demand a strong but flexible bond, such as when bonding materials with differing thermal expansion rates, e.g. glass to metal or glass to plastic
 
| for applications which demand a strong but flexible bond, such as when bonding materials with differing thermal expansion rates, e.g. glass to metal or glass to plastic
 
| Single component alkoxy cure with moisture; for applications which demand a strong but flexible bond, such as when bonding materials with differing thermal expansion rates, e.g. glass to metal or glass to plastic; For maximum adhesion, the use of DOWSIL™ 1200 OS Primer is recommended.
 
| Single component alkoxy cure with moisture; for applications which demand a strong but flexible bond, such as when bonding materials with differing thermal expansion rates, e.g. glass to metal or glass to plastic; For maximum adhesion, the use of DOWSIL™ 1200 OS Primer is recommended.
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|-
 
|-
 
| Dowsil 993
 
| Dowsil 993
| Dow Corning
 
 
|  
 
|  
 
| Click Netherfield mentioned this one as one they use
 
| Click Netherfield mentioned this one as one they use

Revision as of 10:56, 1 November 2022

Description

[Dow] Dow produces numerous types of one-part, neutral-cure Silicone sealant:Silicone materials that can be used as adhesives/sealants. These room temperature vulcanizing (RTV) silicones were introduced in the 1960s and cure upon exposure to atmospheric moisture. There are two type of neutral cure RTS silicones. The first if an alkoxy neutral-cure that releases methanol upon cure. The alkoxy neutral cure silicones are considered suitable for use on all types of metal without risk of corrosion. The second type is an oxime neutral-cure silicones that releases methyl ethyl ketoxime. These withstand temperature better than alkoxy-cure but can cause stress-cracking in some plastic boards, such as polycarbonate and acrylics.

General properties for Dowsil silicones include:

  • Stability over a wide temperature range – When fully cured, most can be used at temperatures ranging from -85° to 599°F (-65° to 315°C).
  • Weather resistance – High resistance to UV rays, radiation and weather prevents our products from hardening, cracking, crumbling, drying and becoming brittle.
  • Chemical stability – Do not readily degrade, even under long-term exposure to many chemicals and atmospheric pollutants.
  • Good bond strength – Provide good adhesion to a wide variety of industrial materials, including glass, ceramics and wood masonry; painted surfaces; and many metals and plastics.
  • Low flammability – In fire conditions, silicone adhesives/sealants are reluctant to burn. Many products comply with UL flammability standards.
Commercial name Cure type Properties Features (comments) Applications Characteristics and Risks Oddy tests Product website Composition and fillers
Dowsil 580 Neutral cure Silicone; oxime neutral cure; one component General Glazing; Weathersealing applications for windows, doors, glass, metal, masonry Will not corrode galvanized/zinc-coated steel or attack concrete; Resistant to weathering, UV, vibration, moisture, ozone, temperatures, pollutants, detergents and solvents; Long life reliability; cured sealant stays rubbery from -50°C to +150°C without tearing, cracking, drying out or becoming brittle; not recommended for water immersion; do not use on structural glazing; may discolor copper and brass; cannot be painted; not for use on polycarbonates AWMM 2007 (T); AWMM 2008 (T) Dowsil 580 Silicone elastomer (with petroleum distillates, 2-Butanone (methylsilylidyne)trioxime; N-(3-(Trimethoxysilyl) propyl)-1,2-
ethanediamine; Vinyltri (methylethylketoxime) silane; Bis[(2-ethyl-2,5-dimethylhexanoyl)oxy](dimethyl)stannate)
Dowsil 737 Neutral Cure Silicone; oxime neutral cure; one component Substitute for mechanical fasteners on large and small appliances; Adhering plastic moldings to plastic substrates for trim applications; Waterproofing electrical components Oxime cure in the presence of moisture; adhesion to most material; excellent weather resistance; Not recommended for water immersion, or use on painted surface; may discolor brass, or copper; may stress craze polycarbonates MMA 2016 (U); BKM 2017 (U); BKM 2018 Px4) BKM 2018 (U) Dowsil 737 Silicone elastomer( 2-Butanone (methylsilylidyne)trioxime; N-(3-(Trimethoxysilyl) propyl)-1,2-
ethanediamine; Vinyltri (methylethylketoxime) silane; Bis[(2-ethyl-2,5-dimethylhexanoyl)oxy](dimethyl)stannate)
Dowsil 739 RTV Silicone; moisture cure; one component Adheres well to unprimed metals, ceramics and glass and some plastics; does not adhere to Teflon, polyethylene, polypropylene, or highly plasticized plastics or rubbers. Single component, moisture cure, RTV with good adhesion; normally sold in syringes and cartridges; MMA 2016 (P) Dowsil 739 Silicone elastomer
Dowsil 791 Weatherproof Sealant Silicone; moisture cure; one component good for inside display envelope: glass and metal joins; glass and glass joins; Goppion uses black, grey, white due to aesthetic reasons (transparent caulks yellow within 5 years) General weather-sealing joints; glazing and curtain wall seals; building façade seals Single component, neutral curing silicone elastomeric sealant for weather-sealing applications; MMA 2016 (T); AMNH 2019 (Tx2); MMA 2021 (T); white is unsuitable https://www.dow.com/en-us/pdp.dowsil-791-weatherproofing-sealant.04082594h.html#overview Silicone elastomer
Dowsil 795 Building Sealant Silicone; moisture cure; one component extra thick; skins over too quickly Structural and nonstructural glazing; for most new construction and remedial sealing applications; weather sealing of most common construction materials including glass, aluminum, steel, painted metal, EIFS, granite and other stone, concrete, brick and plastics Single component, neutral curing; Highly resistant to weather, UV and temperature extremes; adheres to wide variety of materials; not recommended for water immersion, or wet or cold surfaces; not paintable AWMM 2008 (U); MMA 2016 (Px2); MMA 2020 (Ux2); MMA 2021 (T) https://www.dow.com/en-us/pdp.dowsil-795-silicone-building-sealant.01595717z.html#tech-content Silicone elastomer with Diisopropoxydi(ethoxyacetoacetyl)titanate
Dowsil 9-1374 Silicone sealant Silicone; alkoxy neutral cure; one component Used for formed in place gaskets; provides strong flexible bond for movable or expanding joints, such as when bonding materials with different thermal expansion rates such as glass to metal, or glass to plastic or metal to plastic Single component, translucent, RT, alkoxy neutral moisture cure, silicone sealant. MMA 2016 (Tx2) https://www.dow.com//en-us/pdp.dowsil-9-1374-silicone-sealant.03119556h.html#overview Silicone elastomer
Dowsil 3145 RTV Mil-A-46146 Adhesive / Sealant Silicone; moisture cure; one component Skin-over time = 15 min; may be hard to work with (one anecdote of it being very hard to work with); requires experienced person to apply and clean up; viscous, does not flow Sealing openings in modules and housings; Adding mechanical stability to individual components; adheres to glass and nylon Good adhesion to many reactive metals, ceramics and glass, as well as to selected laminates, resins and plastics. However, good adhesion cannot be expected on non-reactive metal substrates or non-reactive plastic
surfaces such as Teflon, polyethylene or polypropylene.
AWMM 1988 (P); BKM 2016 (Px2); BKM 2017 (Px2); AWNH 2019 (T) https://www.dow.com//en-us/pdp.dowsil-3145-rtv-mil-a-46146-adhesive-sealant.01059548z.html#tech-content Polydimethylsiloxane (with Methyltrimethoxysilane, Octamethyl Cyclotetrasiloxane, Methanol
Dowsil 7091 Adhesive Sealant Silicone; moisture cure; one component Skin-over time = 15 min; Click Netherfield mentioned this one as one they use for applications which demand a strong but flexible bond, such as when bonding materials with differing thermal expansion rates, e.g. glass to metal or glass to plastic Single component alkoxy cure with moisture; for applications which demand a strong but flexible bond, such as when bonding materials with differing thermal expansion rates, e.g. glass to metal or glass to plastic; For maximum adhesion, the use of DOWSIL™ 1200 OS Primer is recommended. BKM 2016 (P); BKM 2017 (P); MMA 2017 (P); AMNH 2019 (T) https://www.dow.com//en-us/pdp.dowsil-7091-adhesive-sealant.02436621h.html#tech-content Silicone elastomer (with Diisopropoxydi(ethoxyacetoacetyl)titanatel)
Dowsil 993 Click Netherfield mentioned this one as one they use
Silastic 1080 RTV Dow Corning Silicone; one component Provides reliable, long-lasting bonds with a wide range of substrates, including ceramics, metals, glass and filled plastics, long service life, wide operating temperatures, resistance to oils and solvents; water and steam resistant AWMM 1988 (P) [1] Silicone elastomer

Personal Risks

  • Wear eye, hands, and respiratory protection.
  • SDS: sheets

Collection Risks

Literature indicates the sealant has no significant volatile components. Some silicones have curing byproducts of ethanol, peroxides or ketones. Risk to museum collections could occur if an object comes in contact with the sealant causing possible staining or adhesion (if not fully cured).

Resources and Citations

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