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BluesilPrimer & Adhesion Promoter (Silicone)

BLUESIL Primer 131 (800 g)

Universal adhesion promoter primer for bonding silicone elastomers to stainless steel, aluminum, polymethyl methacrylate (PMMA), and many metals

Cured Color
Transparent
Self-leveling
Yes
Mixing Ratio
One-component
Manufacturer
Elkem Silicones

CHF 0.00 / g
  • Brand
  • Color cured - Transparent
  • Food contact
  • Manufacturer
  • Self-leveling
  • Medical grade
  • Curing type
  • Electrical Insulation
  • Container
  • Number of components
  • Consistency
  • UV resistance
  • Mixing Ratio
Your selection BLUESIL Primer 131 (800 g) 40-994.DO.G800
General terms and conditions of business

Internal reference: 40-994.DO.G800
HS code: 39100000

BLUESIL Primer 131 (800 g) sample offer

Technical Data

Typical values, not a specification. The technical data sheet (TDS) is binding.

Physical and thermal

Flash point
20 °C

Storage

Shelf life in original packaging
24 months
Storage Temperature
5 to 30 °C

Product Information

Brand
Bluesil
Manufacturer
Elkem Silicones
Curing type
Non-reactive
Container
1 kg
Number of components
1K (one-component)
Consistency
Flowable
Mixing Ratio
One-component

Further Properties

UV resistance
No

Physical Properties

Cured Color
Transparent
Self-leveling
Yes

Electrical Properties

Electrical Insulation
No

Product Approvals

Food contact
No
Medical grade
No
Keywords
  • Primer
  • Electronics
  • Silicone
  • Adhesion Promoter
  • BLUESIL
  • ELKEM
  • Swiss warehouse
  • Metal Primer
  • CAF Primer

Product Description

Bluesil Primer 131 is a universal adhesion promoter primer for bonding silicone elastomers to stainless steel, aluminum, polymethyl methacrylate (PMMA), and many metals.

Bluesil adhesion promoter primers — prepare critical substrates (metal, plastic, glass, polyester) for bonding with silicone elastomers, providing significantly higher shear strength than untreated substrate. Primer 131 is tailored to specific applications — the most important properties and areas of use are listed below.

Universal primer for metals and engineering plastics

Bluesil Primer 131 is the proven universal adhesion promoter for the Bluesil RTV and CAF series — especially on stainless steel, aluminum, and PMMA. First prepare the substrate clean and degreased, then apply the primer and allow it to dry for at least 30 minutes before silicone bonding.

Primer 131 in figures
Universal
Metals/PMMA
30 min
Drying
Bluesil
compatible
Solvent
to be applied

What sets Primer 131 apart

Universal application
Stainless steel, aluminum, PMMA, and many other metals.
Proven in industry
Standard primer for Bluesil RTV and CAF bonding applications.
Fast drying (30 min)
Ready for silicone application after 30 min at 23 °C.
Multi-Substrate
Significantly expands the substrate range of Bluesil silicones.
Increased shear strength
Significant improvement in bonding values.

What is Primer 131 used for?

Stainless steel bonding
Main application — reliable Bluesil adhesion on stainless steel.
Aluminum bonding
Aluminum components with Bluesil RTV/CAF.
PMMA bonding
Bond polymethyl methacrylate (Plexiglas) with silicone.
Specialized metal bonding
High-stress metal-silicone bonds.
Industrial repair
Maintenance and repair with Bluesil silicones on metal.
Data Sheets & Safety Data Sheet
TDS and SDS in multiple languages — view or download directly.
To the documents →

Processing

1
Clean substrate
Degrease with acetone or isopropanol, if necessary sand with sandpaper — remove oxide layers and contaminants.
2
Apply primer thinly
Apply with a brush, by dipping, or by spraying — a thin, even layer. Avoid multiple applications — this impairs adhesion.
3
Allow to dry
Allow to dry for at least 30 min at 23 °C — longer under humid conditions. Do not touch during drying.
4
Bond within 24 hours
After the primer has dried, apply the silicone within 24 hours — if waiting longer, renew the primer.
5
Cure the bond
Allow Bluesil RTV/CAF to crosslink according to the manufacturer's workflow — primed substrates achieve significantly higher shear strength.

Recommended accessories


Primer 131 in comparison

Direct comparison with related primer products in our range. “— " = not specified in the data sheet.

Primer 131
Current Product
Primer PM 820 →Primer PM 821 →Primer PM 811 A →
Primer type1K Primer1K primer (special)1K special primer2K Primer Component A
SolventSolvent-basedSolvent-basedSolvent-basedSolvent-based
Solid contentsee TDSsee TDSsee TDSsee TDS
Drying time30 min @ 23 °C30 min @ 23 °Csee TDSsee TDS
SubstratesStainless steel, aluminum, PMMAPA, PES, ABS, PP, CompositesSpecial substratesSpecial substrates
Main applicationUniversal metal/plasticPolar plastics + compositesBluesil Special Application2K primer activator

Frequently Asked Questions about Primer 131

Practical application and design questions — answered by SILITECH.

Bluesil Primer 131: Universal adhesion promoter primer for bonding silicone elastomers to stainless steel, aluminum, polymethyl methacrylate (PMMA), and many metals. Main applications: stainless steel bonding, aluminum bonding, PMMA bonding.

First prepare the substrate clean, grease-free and dry (degrease with acetone, sand if necessary). Apply the primer thinly and evenly with a brush or by dipping. Allow to dry for at least 30 minutes at 23 °C, then apply the silicone (RTV/CAF/Bluesil) to the primed area. For polyaddition silicones, the primer must not contain any inhibitors.

Store in the unopened original container in a dry, cool place — typically standard between +5 and +30 °C, exact values see TDS. Consult the Safety Data Sheet (SDS) before use. Observe the expiration date on the packaging — Elkem guarantees the sales specifications only up to the stated date.

In the comparison table above, you will find related products with similar functions or related specifications. If you are unsure about the optimal choice, we will be happy to advise you — contact SILITECH with your application (desired property, substrate, processing workflow).