BLUESIL Primer PM 821
Bluesil range of special adhesion promoter primers.
Special adhesion promoter primers of the Bluesil series — tailored to extended substrate spectra in Bluesil applications
Documents
Internal reference:
40-93840
HS code:
35061000
Bluesil Primer PM 821 is a special adhesion promoter primer from the Bluesil range — tailored to extended substrate spectra in Bluesil applications.
Bluesil adhesion promoter primers prepare critical substrates (metal, plastic, glass, polyester) for bonding with silicone elastomers, resulting in significantly higher shear strength than untreated substrates. Primer PM 821 is tailored to specific applications—the most important properties and areas of application are listed below.
Bluesil Primer PM 821 expands the Bluesil primer family for defined specialty applications — tailored to extended substrate spectra. Application recommendations and compatibility advice are available from SILITECH.
What makes Primer PM 821 stand out
What is primer PM 821 used for?
processing
Recommended accessories
Primer PM 821 in comparison
Direct comparison with related primer products in our range. “— " = not specified in the datasheet.
Primer PM 821 Current product |
Primer 131 → | Primer PM 820 → | Primer PM 811 A → | |
|---|---|---|---|---|
| Primer type | 1K Special Primer | 1K primer | 1K Primer (Special) | 2K Primer Component A |
| solvent | solvent-based | solvent-based | solvent-based | solvent-based |
| solids content | see TDS | see TDS | see TDS | see TDS |
| Drying time | see TDS | 30 min @ 23 °C | 30 min @ 23 °C | see TDS |
| Substrates | Special substrates | Stainless steel, aluminum, PMMA | PA, PES, ABS, PP, Composites | Special substrates |
| Main application | Bluesil special application | Universal metal/plastic | Polar plastics + composites | 2K Primer Activator |
Technical data for BLUESIL Primer PM 821
| Product information | |
|---|---|
| brand | Bluesil |
| Manufacturer | Elkem Silicones |
| Networking type | Single-component (humidity) |
| Number of components | 1K (single-component) |
| consistency | Flowable |
| Mixing ratio | Single-component |
| Other features | |
|---|---|
| UV resistance | No |
| Physical properties | |
|---|---|
| Paint has hardened | Transparent |
| Self-leveling | Yes |
| Viscosity uncrosslinked (mPa·s) | 0 |
| Electrical properties | |
|---|---|
| Electrical insulation | No |
| Product approvals | |
|---|---|
| Food contact | No |
| Suitable for medical use | No |
For binding values, please refer to the technical data sheet (TDS) in the "Documents" tab.
Documents and datasheets
Click on a document for a preview or the download icon for a direct download.
Technical Data Sheets (TDS) 2
Frequently asked questions about Primer PM 821
Practical application and design questions — answered by SILITECH.
Bluesil Primer PM 821: Special adhesion promoter primer from the Bluesil range — tailored to extended substrate ranges in Bluesil applications. Main applications: Specialty substrates, Bluesil bonding, industrial bonding.
First, prepare the substrate to be clean, grease-free, and dry (degrease with acetone, sand if necessary). Apply the primer thinly and evenly using a brush or dipping method. 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 inhibitors.
Store in the unopened original container in a dry, cool place — typically between +5 and +30 °C, see TDS for exact values. Consult the Safety Data Sheet (SDS) before use. Observe the expiry date on the packaging — Elkem guarantees the product's specifications only until the date shown.
The comparison table above lists related products with similar functions or specifications. If you are unsure which product is best, we would be happy to advise you — contact SILITECH with details of your application (desired properties, substrate, processing workflow).
Your question isn't listed here
Our technical team will advise you personally on material selection, processing questions, and individual requirements. Quickly and competently.
Product specifications
| Product information | |
|---|---|
| brand | Bluesil |
| Manufacturer | Elkem Silicones |
| Networking type | Single-component (humidity) |
| Number of components | 1K (single-component) |
| consistency | Flowable |
| Mixing ratio | Single-component |
| Other features | |
|---|---|
| UV resistance | No |
| Physical properties | |
|---|---|
| Paint has hardened | Transparent |
| Self-leveling | Yes |
| Viscosity uncrosslinked (mPa·s) | 0 |
| Electrical properties | |
|---|---|
| Electrical insulation | No |
| Product approvals | |
|---|---|
| Food contact | No |
| Suitable for medical use | No |
| Keywords | |
|---|---|
| Keywords | |
| Physical & Thermal | |
|---|---|
| Flash point | 20.0 °C |
| storage | |
|---|---|
| Shelf life in original packaging | 12 months |
| Storage temperature | 5 to 30 °C |
Documents and datasheets
Safety Data Sheets (SDS) and Technical Data Sheets (TDS) are available for download: