- VACSEAL® High Vacuum Leak Sealant (Liquid) - Currently in stock - 10pcs
Bottle, 0.5 fl. oz.(14 ml) with brush applicator top - VACSEAL® High Vacuum Leak Sealant (Spray)
Aerosol can 16 oz (453 g) with 6" (152 mm) snorkel tube
Vacseal® is a silicone-based liquid resin system designed to seal leaks in high and ultra-high vacuum (UHV) systems. It can seal leaks as small as 4 micron-liters per second under evacuation and larger leaks at atmospheric pressure. In addition to sealing, it can be used for bonding optical windows, reducing the IR reflectivity of metals, and improving heat transfer.
Key Features:
- Resistant to extreme temperatures (-200°C to 450°C).
- Adheres well to almost all surfaces.
- Potential for space applications, though no official certification is documented.
- Radiation-resistant and suitable as an adhesive at cryogenic temperatures.
- Removable with solvents such as toluene or methyl ethyl ketone (MEK).
- Shelf life varies: three years in sealed bottles, but only three months in quart cans.
Applications:
- Sealing components in UHV systems.
- Repairing gauge tubes and vacuum feedthroughs.
- Possible use for containing hydrogen, though with limitations.
- Not ideal for threaded joints in UHV due to slow solvent evaporation.
Vacseal® is also available as Vacseal II, a reformulated version without ozone-depleting compounds.
Files
| Attachment | Size |
|---|---|
 Safety data sheet Vacseal Aerosol | 75.48 KB |
| Safety data sheet Vacseal Liquid | 78.95 KB |
VACSEAL is extremely useful as a cement for sealing all kinds of optical windows and CRT glass to wire feedthroughs. It will substantially reduce the IR reflectivity of metals and will produce higher emissivity levels for better heat transfer. VACSEAL has expansive application as an adhesive at cryogenic temperatures as well as good radiation resistance. The sealant's durability will survive the environment of space without adverse effect on the product or the spacecraft itself.
Available in both aerosol cans and bottles, VACSEAL can withstand repeated temperature cycling from liquid helium temperatures to 450 C over long intervals of time.