This guide is written for engineers, procurement teams, and research groups comparing cryogenic insulation materials for real equipment. The short version: do not select multilayer insulation (MLI) by product name alone. Start with the operating environment, vacuum condition, boundary temperature, geometry, cleanliness requirements, and delivery format.
East Far Cryo supplies cryogenic insulation materials and processed material kits. We do not manufacture tanks, cryostats, vacuum pumps, refrigeration systems, valve boxes, or transfer lines.
Quick Selection Summary
| Application | Main selection concern | Typical material package | Parameters to send |
|---|---|---|---|
| Liquid hydrogen storage or onboard LH2 tanks | 20 K boundary, hydrogen compatibility, vibration, vacuum hold time | Density-controlled CryoMLI, low-outgassing CryoTape, CryoFiG protection, vacuum support | Hot/cold boundary temperature, tank geometry, vacuum target, vibration/cycling, target heat leak |
| Liquid helium and superconducting magnets | 4.2 K boundary, very low heat leak, clean handling | High-performance MLI stack, low-outgassing fixing, clean packaging | Magnet or cryostat geometry, LHe boundary, vacuum level, allowable outgassing, assembly method |
| LNG / LN2 / LOX storage and transport | Production repeatability, large-area wrapping, oxygen compatibility where applicable | Slit CryoMLI rolls, CryoTape fixing, profile-cut protection layers | Vessel size, medium, pressure/vacuum, transport vibration, oxygen-clean requirements |
| Satellite MLI blankets | Low outgassing, external thermal protection, blanket geometry | MLI blanket materials, tapes, edge finishing, drawing-based cutting | Orbit/thermal zones, substrate, blanket drawing, cleanliness, outgassing requirements |
| Vacuum-jacketed piping and cold boxes | Curves, supports, penetrations, installation variability | Slit rolls, narrow tapes, spacer/fixing materials, cut pieces | Pipe diameter, bend radius, supports, vacuum level, installation access |
| Fusion, accelerator, and research cryogenics | Mixed thermal zones, custom geometry, documentation | Variable-density MLI, vacuum support, labeled batch kits | Zone map, temperatures, vacuum, area, drawings, documentation needs |
Step 1: Define the Cryogenic Boundary
The cold boundary changes the material selection:
- LNG / LN2 / LOX range: often around 77-111 K. Installed performance is strongly affected by wrapping quality, seams, vacuum, and transport vibration.
- Liquid hydrogen: about 20 K. Heat leak is more sensitive, and hydrogen compatibility, permeability, vacuum behavior, and vibration may matter.
- Liquid helium: about 4.2 K. Small heat leaks become important. Supports, penetrations, and neck tubes can dominate the total heat budget.
- Space or satellite thermal control: temperature zones and radiative environment may be more important than a single cold boundary.
Step 2: Define the Vacuum Condition
MLI performance depends on vacuum. Under good high vacuum, radiation and solid conduction dominate. Under degraded or soft vacuum, residual gas conduction can become the main heat path.
Send:
- Vacuum target and unit
- Initial pump-down pressure and expected operating pressure
- Hold time
- Residual gas or service medium
- Whether adsorbent or getter material is planned
- Measurement location and gauge type if known
Step 3: Decide Whether You Need Roll Material or a Processed Kit
Roll material is suitable when the customer has internal cutting, wrapping, labeling, and installation capability. A processed kit is better when repeatability matters.
East Far Cryo can support:
- Slitting and rewinding
- CNC vibration-knife profile cutting
- Openings, curves, and drawing-based shapes
- Sewing or edge treatment when applicable
- Labeled and batch-packaged material kits
- Customer-supplied material cutting
Step 4: Separate Material Performance From Installed Performance
MLI is not a single sheet with one fixed thermal conductivity. Installed performance changes with:
- Layer density
- Compression
- Seam overlap
- Penetrations
- Supports
- Tape coverage
- Cleanliness
- Vacuum quality
- Installer method
Use the Lockheed Equation Calculator for first-order blanket heat flux estimates, then add supports, penetrations, neck tubes, and edge losses separately.
Application-Specific Notes
Liquid Hydrogen Systems
Liquid hydrogen systems require more than a low-temperature material rating. Engineers should review hydrogen compatibility, vacuum integrity, thermal cycling, vibration, permeation risk, and cleanliness. For vehicle-mounted or mobile tanks, profile-cut protection layers and repeatable density control can matter as much as the base MLI material.
Liquid Helium and Superconducting Systems
At liquid helium temperature, small heat leak paths become large design problems. The MLI blanket is only one part of the system. Support rods, current leads, neck tubes, instrumentation wires, and penetrations should be reviewed together with the material stack.
Satellite MLI Blankets
For satellite thermal control, East Far Cryo can discuss material format, edge finishing, low-outgassing needs, and blanket processing. Public project references on this site should not be interpreted as flight heritage unless explicitly stated for a specific program.
LNG, LOX and LN2 Transport
For cryogenic transport and storage equipment, repeatable production is often the main issue. Slit rolls, label-controlled material packages, CryoTape fixing, and drawing-based cutting reduce shop-floor variation.
What to Send for a Material Recommendation
Send as much as you know:
- Application and cryogenic medium
- Hot and cold boundary temperatures
- Vacuum target and hold time
- Equipment type and geometry
- Surface area or drawings
- Target heat leak or layer count
- Cleanliness, oxygen, hydrogen, electrical, radiation, or low-outgassing requirements
- Whether you need roll material, slit rolls, cut pieces, or labeled kits
- Required documents, inspection records, and packaging rules
If you do not know all parameters yet, send the application and current design stage. Technical sales can help identify the missing inputs.