Silicones, silicone oils, sprays
Casting and potting resins)
BLUESIL ESA 7244 B
Part B of a thermosetting 2-component silicone adhesive (addition); with Part A, A:B = 50:50 by volume; for bonding to metal and plastic
Shore A 50 · Viscosity of mixture approx. 65,000 mPa·s · Pot life > 16 h at 23 °C · IEC 60695-11-10 FV-1, NF F 16101 M1/F0, FMVSS 302 self-extinguishing
Hot-curing 2K Pt silicone adhesive (Shore A 50, heat curing) for automotive cylinder head gaskets, engine insulation and screen-printed seals
Documents
HS Code:
39100000
Rhodorsil ESA 7244 A & B is a heat-curing 2K Pt silicone adhesive (Shore A 50, heat cross-linking) for automotive cylinder head gaskets, engine insulation and screen printing gaskets.
This product line comprises heat-curing 2K polyaddition silicone elastomers for high-throughput industrial production — long pot life at room temperature, rapid curing at 100–200 °C. ESA 7244 is tailored to specific industrial applications — the most important properties and areas of application are listed below.
Rhodorsil ESA 7244 is a heat-curing potting compound — fully cured in minutes at 100–200 °C (e.g., 10 min at 150 °C), with a long pot life at room temperature (16 hrs). Ideal for high-throughput industrial production with cylinder head gaskets, engine insulation, and screen printing applications.
What distinguishes ESA 7244
What is ESA 7244 used for?
Processing
Recommended accessories
Important Notes
ESA 7244 compared to related RTV products
Crosslinking system, mechanics, and processing times directly side by side — all values from the official Elkem-TDS. “— " = not specified in the data sheet.
ESA 7244 Current Product |
ESA 6110 → | ESA 7250 → | ESA 7252 → | |
|---|---|---|---|---|
| Crosslinking system | 2K polyaddition (Pt) hot-curing | 2K Polyaddition (Pt) Gel | 2K Polyaddition (Pt) | 2K Polyaddition (Pt) |
| Mixing ratio | 1 : 1 | 1 : 1 | 10 : 1 | 1 : 1 |
| Color | Beige (A) / blue (B) | Optically clear | Optically clear, colorless | Black (A) / white (B) |
| Shore A hardness | A 50 | Gel (penetration 250) | A 52 | A 48 |
| Elongation at break | >160 % | — | 115 % | 170 % |
| Tensile Strength | 5.5 MPa | — | 6.2 MPa | 2.3 MPa |
| Tear strength | — | — | 4 kN/m | — |
| Pot life | 16 h @ 23 °C | 50 min (Std) / 5 min (QC) | 4 h | 1.5 h |
| Demolding time | 10 min @ 150 °C | 120–180 min | 24–48 h | 8 h (RT) / 5 min @ 150 °C |
| Mixed viscosity | 60,000 mPa·s | 1'200 mPa·s | 4'000 mPa·s | 3,000–3,500 mPa·s |
| Main application | Cylinder head gaskets (screen printing) | Electronics Encapsulation (Potting) | Electronics potting | Aerospace fire protection |
Technical data for BLUESIL ESA 7244 B
| Product Information | |
|---|---|
| Brand | Bluesil |
| Manufacturer | Elkem Silicones |
| Curing type | Addition (Platinum) |
| Number of components | 2K (two-component) |
| Consistency | Flowable |
| Mixing Ratio | 1:1 |
| Container | 1 kg, 2.5 kg, 5 kg, 25 kg |
| Further Properties | |
|---|---|
| UV resistance | Yes |
| Physical Properties | |
|---|---|
| Cured Color | Transparent |
| Self-leveling | Yes |
| Uncrosslinked viscosity (mPa·s) | 100 |
| Electrical Properties | |
|---|---|
| Electrical Insulation | Yes |
| Curing values | |
|---|---|
| Pot life (min) | 16 |
| Product Approvals | |
|---|---|
| Food contact | No |
| Medical grade | No |
| Mechanical properties | |
|---|---|
| Tensile strength (MPa) | 5.5 |
| Elongation at break (%) | 160 |
Please refer to the technical data sheet (TDS) in the "Documents" tab for binding values.
Documents and data sheets
Click on a document for the preview or the download icon for direct download.
Technical Data Sheets (TDS) 3
Frequently asked questions about ESA 7244
Practical processing and design questions — answered by SILITECH.
Rhodorsil ESA 7244 A & B: Hot-curing 2-component platinum silicone adhesive (Shore A 50, heat-curing) for automotive cylinder head gaskets, engine insulation, and screen-printed gaskets. Main applications include cylinder head gaskets (screen printing), electric motor insulation, and starter and generator insulation.
Polyaddition crosslinking is a 2-component silicone chemistry with a platinum catalyst. Component A contains the platinum complex, component B the SiH crosslinker. When mixed, the components crosslink without releasing reaction by-products — no shrinkage due to outgassing substances, excellent dimensional accuracy, low linear shrinkage. Important: Polyaddition silicones are inhibited by various substances — sulfur-vulcanized natural rubbers, tin-catalyzed RTV silicones, amine-catalyzed epoxy resins, PVC stabilized with tin salts. In case of doubt, a preliminary test must be carried out.
Thoroughly stir components A and B before each processing step. Dose precisely according to the mixing ratio specified in the TDS (see comparison table above) — preferably by weight. Mix with an electric or pneumatic stirrer at low speed (minimize air entrainment). Degas the mixture under vacuum (30–50 mbar) — the material expands to 3–4 times its volume, bubbles escape, and the material settles back after 5–10 minutes. Then pour slowly into the mold from the lowest point to avoid air entrapment. For polyaddition systems, avoid contact with inhibitors (sulfur rubber, tin RTV, amine epoxides, PVC with tin salts).
Store in unopened original container in a dry, cool place — typically between +5 and +30 °C, exact values see TDS. Store components A and B separately; after opening, seal airtight. Polyaddition systems are insensitive to moisture, but should be stored cool to preserve pot life. Consult the Safety Data Sheet (SDS) before use.
In the comparison table above, you will find related RTV products with different hardnesses, pot lives, or application profiles. If you are unsure about the optimal choice, we will be happy to advise you — contact SILITECH with your application (substrate, desired hardness, processing time, requirements for mechanical properties and resistance).
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Our technical team provides personal advice on material selection, processing questions, and individual requirements. Fast and competent.
Product Specifications
| Product Information | |
|---|---|
| Container | 1kg or 2.5kg or 5kg or 25kg |
| Brand | Bluesil |
| Manufacturer | Elkem Silicones |
| Curing type | Addition (Platinum) |
| Number of components | 2K (two-component) |
| Consistency | Flowable |
| Mixing Ratio | 1:1 |
| Further Properties | |
|---|---|
| UV resistance | Yes |
| Physical Properties | |
|---|---|
| Cured Color | Transparent |
| Self-leveling | Yes |
| Uncrosslinked viscosity (mPa·s) | 100 |
| Electrical Properties | |
|---|---|
| Electrical Insulation | Yes |
| Curing values | |
|---|---|
| Pot life (min) | 16 |
| Product Approvals | |
|---|---|
| Food contact | No |
| Medical grade | No |
| Mechanical properties | |
|---|---|
| Tensile strength (MPa) | 5.5 |
| Elongation at break (%) | 160 |
| Keywords | |
|---|---|
| Keywords | |
| Processing | |
|---|---|
| Viscosity of Mixture | 1’200 mPa·s |
| Viscosity Comp. A | 1’000 mPa·s |
| Viscosity Component B | 1’200 mPa·s |
| Pot life at 23°C | 45.0 min |
| Physical & Thermal | |
|---|---|
| Density (23°C) | 0.98 g/cm³ |
| Temperature Resistance (Continuous) | -50 to 200 °C |
| Peak Temperature (Short-term) | 200 °C |
| Electrical characteristics | |
|---|---|
| Dielectric constant ε (1 kHz) | 2.8 |
| Dielectric strength | 23.0 kV/mm |
| Volume resistivity | 1e+15 Ω·cm |
| Dissipation factor tan δ | 0.001 |
| Storage | |
|---|---|
| Shelf life in original packaging | 12 months |
| Storage Temperature | -10 to 30 °C |
Documents and data sheets
Safety Data Sheets (SDS) and Technical Data Sheets (TDS) for download:
- Bluesil ESA 7244 B - Fiche Technique FR.pdf (189 KB)
- Bluesil ESA 7244 B - Fiche de Sécurité FR.pdf (568 KB)
- Bluesil ESA 7244 B - Scheda di Sicurezza IT.pdf (558 KB)
- Bluesil ESA 7244 B - Safety Data Sheet DE.pdf (361 KB)
- Bluesil ESA 7244 B - Technical Data Sheet EN.pdf (683 KB)
- Bluesil ESA 7244 B - Technical Data Sheet DE.pdf (56 KB)