Silicones, silicone oils, sprays
Casting and potting resins)
BLUESIL V-695 A+B Black (2.74 kg Kit)
Kit consisting of Part A and Part B of a flowable, addition-curing 2K silicone sealant, black; mixed according to the manufacturer's weight ratio; abradable air seal for engine compressors
Special 2K-Pt silicone (black, flowable) as an abrasive air seal material for the compressor blades of jet engines (aerospace special choice)
Internal reference:
40-695.KT.K2.74
HS code:
34039900
Bluesil V-695 A & B is a special 2K-Pt silicone (black, flowable) as an abradable air seal material for the compressor blades of jet engines (aerospace special choice).
This product line comprises aerospace-qualified specialty 2K silicone elastomers for demanding aerospace applications — e.g., abradable air seals in jet engines. V-695 is tailored to specific industrial applications — the key properties and areas of application are listed below.
Bluesil V-695 is a highly specialized potting compound for the aerospace industry—an abrasive air seal material used between compressor blades and the casing of jet engines. It features high thermal stability, good machinability, a long working time, and low density.
What distinguishes the V-695
What is the V-695 used for?
Processing
Recommended accessories
Important Notes
V-695 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.
V-695 Current Product |
ESA 7252 → | ESA 7250 → | RTV 8352 LV → | |
|---|---|---|---|---|
| Crosslinking system | 2K Polyaddition (Pt) | 2K Polyaddition (Pt) | 2K Polyaddition (Pt) | 2K Polyaddition (Pt) |
| Mixing ratio | see TDS | 1 : 1 | 10 : 1 | 1 : 1 |
| Color | Black | Black (A) / white (B) | Optically clear, colorless | Whitish |
| Shore A hardness | see TDS | A 48 | A 52 | A 55 |
| Elongation at break | — | 170 % | 115 % | 78 % |
| Tensile Strength | — | 2.3 MPa | 6.2 MPa | 2.3 MPa |
| Tear strength | — | — | 4 kN/m | — |
| Pot life | long | 1.5 h | 4 h | 130 min |
| Demolding time | with heat treatment | 8 h (RT) / 5 min @ 150 °C | 24–48 h | 8 h |
| Mixed viscosity | flowable | 3,000–3,500 mPa·s | 4'000 mPa·s | 2'200 mPa·s |
| Main application | Jet engine compressor air seals | Aerospace fire protection | Electronics potting | Electrical Engineering Encapsulation |
Technical specifications for BLUESIL V-695 A+B Black (2.74 kg Kit)
| Product Information | |
|---|---|
| Brand | Bluesil |
| Manufacturer | Elkem Silicones |
| Mixing Ratio | 100:5 |
| Curing type | Addition (Platinum) |
| Number of components | 1K (one-component) |
| Consistency | Thixotropic |
| Mixing Ratio | One-component |
| Further Properties | |
|---|---|
| UV resistance | Yes |
| Physical Properties | |
|---|---|
| Cured Color | Black |
| Self-leveling | No |
| Electrical Properties | |
|---|---|
| Electrical Insulation | Yes |
| Curing values | |
|---|---|
| Pot life (min) | 40 |
| Demolding time (min) | 240 |
| Product Approvals | |
|---|---|
| Food contact | No |
| Medical grade | No |
| Mechanical properties | |
|---|---|
| Shore hardness A (cured) | A 40 |
Please refer to the technical data sheet (TDS) in the "Documents" tab for binding values.
Frequently Asked Questions about V-695
Practical processing and design questions — answered by SILITECH.
Bluesil V-695 A & B: Special 2K platinum silicone (black, flowable) as an abrasive air seal material for compressor blades of jet engines (aerospace specialty choice). Main applications include jet engine compressor air seals, specialty aerospace potting, and high-temperature aerospace.
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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Product Specifications
| Product Information | |
|---|---|
| Brand | Bluesil |
| Manufacturer | Elkem Silicones |
| Mixing Ratio | 100:5 |
| Curing type | Addition (Platinum) |
| Number of components | 1K (one-component) |
| Consistency | Thixotropic |
| Mixing Ratio | One-component |
| Further Properties | |
|---|---|
| UV resistance | Yes |
| Physical Properties | |
|---|---|
| Cured Color | Black |
| Self-leveling | No |
| Electrical Properties | |
|---|---|
| Electrical Insulation | Yes |
| Curing values | |
|---|---|
| Pot life (min) | 40 |
| Demolding time (min) | 240 |
| Product Approvals | |
|---|---|
| Food contact | No |
| Medical grade | No |
| Mechanical properties | |
|---|---|
| Shore hardness A (cured) | A 40 |
| Keywords | |
|---|---|
| Keywords | |
| Physical & Thermal | |
|---|---|
| Density (23°C) | 1.2 g/cm³ |
| Temperature Resistance (Continuous) | -40 to 200 °C |
| Peak Temperature (Short-term) | 200 °C |
| Storage | |
|---|---|
| Shelf life in original packaging | 36 months |
| Storage Temperature | 2 to 40 °C |
Documents and data sheets
Safety Data Sheets (SDS) and Technical Data Sheets (TDS) for download: