Technical Specifications
Everything you want to know about CLOAK’s construction, materials, and engineering. This is the full breakdown—every layer, every material, every fastener.
System Overview
CLOAK is a two-piece system: a permanent base mount and a removable protective cover. The base mount adheres to your safe door around the keypad opening. The outer cover slides onto the base via precision-guided slots and is held in place by 16 neodymium magnets (8 in the base, 8 in the cover).
The removable cover contains six specialized protective layers, each serving a distinct function. Together they provide shielding against electromagnetic pulse, fire, water, and impact—the four environmental threats your safe’s keypad was never designed to handle.
Dimensions & Fit
Cover Dimensions
Compatibility
Layer Summary
| # | Layer | Material | Protects Against |
|---|---|---|---|
| 1 | Cerakote Aluminum Shell | Aluminum + polymer-ceramic coating | local_fire_departmentbroken_imagewater_drop |
| 2 | Faraday Material | Copper/nickel conductive fabric | bolt |
| 3 | Fireproof Felt | Welding-blanket-grade fiber | local_fire_department |
| 4 | Faraday Material | Copper/nickel conductive fabric | bolt |
| 5 | Nylon 6/12 Outer | Fiber-impregnated polyamide 6/12 | broken_imagelocal_fire_department |
| 6 | Nylon 6/12 Inner | Fiber-impregnated polyamide 6/12 | broken_image |
The Base Mount
The base mount is the permanent anchor point. Once installed, it stays on your safe door for the life of the product. It frames the keypad opening without obstructing the keyway or backup key slot.
Nylon 6/12 Frame
Structural BodyFiber-impregnated Nylon 6/12 (polyamide 6/12)—a semi-crystalline thermoplastic known for exceptional rigidity, low moisture absorption, and high heat deflection temperature. Unlike standard nylon (6/6), the 6/12 variant offers superior dimensional stability and chemical resistance.
Nylon 6/12 Properties
3M VHB Adhesive
Primary Bond — Permanent Attachment3M VHB (Very High Bond) double-sided adhesive tape provides the primary mechanical bond between the base mount and the safe door. If you’ve ever tried to remove a VHB bond, you already know: this tape is absurdly strong. It’s the same adhesive that holds glass curtain walls to skyscrapers, bonds aircraft interior panels at altitude, and secures highway signs rated for 150+ mph wind loads. No screws, no bolts—just the red-liner tape that structural engineers trust with their buildings.
VHB is a closed-cell acrylic foam tape. The foam core allows it to conform to slight surface irregularities on your safe door, maximizing contact area and creating a bond that actually gets stronger over time as the acrylic flows into the micro-texture of the surface. After 72 hours of cure time, VHB reaches its full rated strength—at which point you’d sooner damage the paint on the safe than peel the mount off.
VHB Properties
Why not screws or bolts? Mechanical fasteners would require drilling into your safe door—compromising the fire rating and structural integrity of the safe itself. VHB provides equivalent or superior holding force without any permanent modification to your safe. If you ever need to remove CLOAK, a heat gun and dental floss will release the VHB bond cleanly.
Neodymium Magnets (Base Side)
Thermal Failsafe & Cover CouplingEight neodymium rare-earth magnets (NdFeB, Grade N52) are embedded in the base mount, positioned around the perimeter—away from the keypad electronics. They serve two purposes: they act as a thermal failsafe for the adhesive bond (if ambient temperature exceeds 300°F and the VHB softens, the magnets maintain the mount’s position), and they provide the magnetic coupling points for the outer cover.
Note on keypad safety: The magnets are positioned around the perimeter of the base mount, away from the keypad electronics. Neodymium magnets do not affect electronic keypad function. Modern safe keypads use membrane switches and microcontrollers that are not susceptible to static magnetic fields.
The Outer Cover
The removable outer cover is the active protection component. It slides onto the base mount via precision-guided slots and is held by 8 integrated neodymium magnets that align with the 8 magnets in the base, engaging all 16 for a powerful hold. The cover can be removed in seconds for safe access or battery changes.
The cover is comprised of six specialized layers, listed from outermost to innermost:
Cerakote Aluminum Shell
Outermost Layer — First Line of DefenseThe outer shell is machined from aluminum and finished with Cerakote—a polymer-ceramic composite coating originally developed for the firearms industry. Cerakote is applied as a thin-film liquid and cured at high temperature, bonding to the metal at a molecular level.
This layer provides the primary barrier against physical impact, heat transfer, moisture intrusion, and UV degradation. The aluminum substrate absorbs and distributes impact energy, while the Cerakote finish prevents corrosion even in humid or salt-air environments.
Cerakote Properties
Military-Grade Faraday Material
Primary EMP ShieldA copper/nickel conductive fabric that functions as a Faraday cage around the keypad. When electromagnetic energy strikes the surface, the conductive material allows electric charges to redistribute across its area, creating an opposing field that cancels the incoming signal. Current flows around the exterior of the shield rather than penetrating through to the keypad electronics.
This is the same class of material used in professional RF shielding rooms, military electronics enclosures, and EMI/RFI gaskets. It blocks a broad spectrum of electromagnetic interference including EMP (E1, E2, E3 components), RF signals, and electrostatic discharge.
Faraday Layer Properties
Fireproof Felt
Thermal Insulation LayerA layer of welding-blanket-grade fireproof felt—the same class of material used to protect surrounding surfaces during welding, cutting, and grinding operations. This felt is composed of high-temperature fibers that resist direct flame contact and dramatically slow heat transfer.
Positioned between the aluminum shell and the inner Faraday layer, this felt creates a critical thermal break. Even if the outer aluminum shell absorbs significant heat from a nearby fire or heat source, the fireproof felt insulates the inner layers and the keypad from that thermal energy. This buys time—the keypad stays functional longer during a fire event.
Military-Grade Faraday Material
Redundant EMP ShieldA second, independent layer of copper/nickel Faraday material identical to Layer 2. This is not backup—it’s defense in depth. Dual Faraday layers ensure comprehensive electromagnetic protection even if one layer is physically compromised (punctured, torn, or degraded over time).
The thermal break provided by the fireproof felt (Layer 3) between the two Faraday layers also prevents galvanic coupling between them, ensuring each layer functions as an independent shielding surface. This dual-layer approach mirrors the redundancy philosophy used in military-grade TEMPEST shielding.
Nylon 6/12 Outer Structural Layer
Structural ReinforcementThe same fiber-impregnated Nylon 6/12 used in the base mount. This layer provides rigid structural reinforcement to the cover assembly, distributing impact forces across the entire surface area rather than allowing point loads to reach the keypad. It also contributes additional heat resistance (melting point 410°F) to the inner protection stack.
Nylon 6/12 Inner Liner
Final Barrier — Closest to KeypadA second layer of fiber-impregnated Nylon 6/12 matching the base mount and Layer 5. This is the innermost surface—the last barrier between the environment and your keypad. It provides the same rigidity, heat resistance, and low moisture absorption as the outer nylon layer, creating a symmetrical structural sandwich around the Faraday and insulation layers.
The dual-nylon construction (Layers 5 and 6) encapsulates the sensitive Faraday and felt layers, protecting them from physical damage during cover removal and reinstallation.
Cover Magnet System
16 Magnets — Precision AlignmentThe outer cover contains eight neodymium magnets that align with the eight base magnets when the cover slides into position. The precision-guided slot system ensures exact alignment every time, engaging all 16 magnets simultaneously for maximum holding force.
Total Magnets
16 neodymium magnets total: 8 in base mount + 8 in outer cover. All Grade N52—the strongest commercially available permanent magnet grade.
Alignment
Precision-guided slots ensure cover seats in the exact same position every time. No fumbling, no misalignment. Slide on, magnets engage, done.
Heat Tolerance
N52 neodymium magnets maintain their magnetic properties up to 176°F (80°C) at full strength, with the Curie temperature (complete demagnetization) at 572°F (300°C)—well above the VHB adhesive failover point.
From the Founder
Seen Enough?
Five layers. Sixteen magnets. One purpose: keeping your keypad alive.