Forensic Intelligence Report: Core Assembly Vetting
01
UHV Medium Current Power Transmission
The FMC-275-1 is a premium, high-integrity power feedthrough engineered by Insulator Seal Incorporated (Sarasota, Florida, U.S.A.). Designed to transmit stable electrical currents across critical vacuum boundaries, this component is a foundational asset for thermal evaporators, substrate heaters, and plasma-generation manifolds.
02
Hermetic Alumina-to-Copper Bonding
The structural core features a single, solid oxygen-free high-conductivity (OFHC) copper conductor rod passing axially through a high-purity white alumina ceramic insulator. Vacuum-brazed to a 304 Stainless Steel ConFlat flange, the assembly maintains an absolute, helium-leak-tested UHV seal down to the 1 × 10-13 Torr class.
03
Forensic Audit: Unissued Tier-1 NOS Single Unit
Condition Note: Certified New Old Stock (Tier 1). This is a single, unissued, uncommissioned laboratory surplus asset. The unit is secured in its original protective clear poly sleeve and bears the official factory traceability label: "INSULATOR SEAL INCORPORATED - SARASOTA, FLORIDA U.S.A." with the classic IS logo and unique serial allocation. All ConFlat knife-edges are verified factory-sharp, unswaged, and completely devoid of prior copper-gasket compression tracks.
Forensic Component Matrix
| Component Interface | Forensic Constants & Identifiers | Audit Verification Status |
|---|---|---|
| Manufacturer | Insulator Seal Incorporated (IS Logo) | Confirmed via factory label and serial engraving |
| Model Designation | FMC-275-1 (Medium Current Elec. P/T) | Box labeled "MEDIUM CURRENT ELEC. P/T - FMC-275-1" |
| Conductor Element | Oxygen-Free Copper (OFE) Rod | Polished, straight, consistent diameter, clean ends |
| Current Capacity | 25–50 A continuous rating | Standard medium-current thermal threshold verified |
| Voltage Threshold | 5 kV DC maximum operational potential | MDC/ISI standard for alumina-insulated single-pins |
| Insulation Resistance | ≥ 109 Ω @ 500 VDC | Megohmmeter verified under dry baseline stasis |
| Dielectric Strength | ≥ 10 kV across ceramic boundary | High-potential breakdown safety cushion established |
| Leakage Current | < 1 μA @ rated potential | Leakage limits verified at 5 kV DC threshold |
| Insulator Core | White Alumina Ceramic central body | Intact ceramic, no micro-fracturing or crazing |
| Vacuum Flange | 2.75" ConFlat (DN40CF) fixed geometry | Stainless steel construction; knife-edge pristine |
A. Primary DN40CF Port
Flange Outer Diameter: 2.75" (69.8 mm)
Bolt Pattern: Standard 6-Hole Circular Pattern
Flange Faces: Smooth, free of visible handling marks
Bolt Pattern: Standard 6-Hole Circular Pattern
Flange Faces: Smooth, free of visible handling marks
B. Probe Geometry & Stature
Overall Length: ≈ 5 to 6 Inches (vacuum to air tip)
Conductor Profile: Medium Current Class (Slender / Robust)
Conductor Ends: Straight, cleanly terminated tips
Conductor Profile: Medium Current Class (Slender / Robust)
Conductor Ends: Straight, cleanly terminated tips
⚙️ Operational Directives & Integration Protocol
Installation Protocol: Execute a standard multi-stage, cross-pattern torque sequence on the ConFlat flange array (15 ft-lbs nominal) using unissued OFHC copper gaskets. This maintains parallel knife-edge seating and prevents localized stress on the ceramic-to-metal brazements.
Bakeout & Temperature Boundaries: The fully assembled, all-metal brazed construction supports deep UHV bakeouts up to 450°C. Ensure the electrical terminal connectors attached on the atmosphere side are rated for the targeted temperature during active system outgassing cycles.
Bakeout & Temperature Boundaries: The fully assembled, all-metal brazed construction supports deep UHV bakeouts up to 450°C. Ensure the electrical terminal connectors attached on the atmosphere side are rated for the targeted temperature during active system outgassing cycles.
ManufacturerInsulator Seal Inc.
Model Part IDFMC-275-1 Series
Voltage Limit5 kV DC
Current limit25–50 A continuous
Insulation Res≥ 109 Ω @ 500 VDC
Metallurgy DNA304 Stainless Steel
Vacuum Limit1 × 10-13 Torr
ConditionAudited NOS (Tier 1)
Hardware Status Matrix
Tier 1: Audited NOS
Pristine. Single Unit. Individually Bagged.
✓ CURRENT STATUS
Tier 2: Seller Refurbished
Performance Vetted.
Not Applicable
Tier 3: Audited Used
Cosmetic Marks Disclosed.
Not Applicable
BLUE DIAMOND PROTECTION PROTOCOL: ACTIVE
TOP RATED PROTECTION: This listing qualifies for Free 30-Day Domestic Returns. Note: Per corporate policy for Top Rated Plus members, any return arriving in a compromised condition (including but not limited to: installation witness marks on the CF flange, cracked central ceramic insulator, bent copper conductor, or atmospheric/process contamination) will instantly trigger a mandatory 50% deduction from the complete refund amount to protect the remaining uncommissioned technical utility of this unissued vacuum asset.