Forensic Intelligence Report: Hardware Modification
01
Precision Feedthrough Integration
This 2.75" ConFlat (DN40CF) flange features a 0.36" central bore. This indicates the central passage has been precision-drilled to accommodate a specific feedthrough shaft, high-voltage lead, thermocouple array, or alignment pin, making it a system-specific interface.
02
The "Utility Hub" Advantage
The addition of the 6-hole mounting pattern on the vacuum side elevates this from a simple bored blank to a specialized two-sided union and UHV "Utility Hub." This modification allows for the direct securing of internal shielding, sample stages, or localized instrumentation directly to the flange interface.
03
Forensic Audit: Condition Class Used / Vetted
Condition Note: Used/Vetted. The sealing knife-edge is verified pristine under magnification. The 0.36" central bore is free of burrs, and the internal 6-hole mounting pattern is clean and ready for immediate deployment.
II. Operational Directives & Buyer Interface
Sealing Directive: If utilizing this as a pass-through for an electrical lead or thermocouple, ensure the vacuum-to-atmosphere seal is achieved via a high-vacuum epoxy or a compression fitting installed within the 0.36" bore.
System Mounting: The 6-hole standard bolt circle remains intact for secure attachment to any industry-standard 2.75" CF chamber port.
FLANGE STANDARD2.75" OD (DN40CF)
BOLT CONFIGURATION6-HOLE CIRCLE
CENTRAL BORE0.36" DIAMETER
MODIFICATION6-HOLE MOUNT
METALLURGY304/304L SS
CONDITIONUSED / VETTED
Hardware Status Matrix
Tier 1: Audited NOS
Pristine. Unissued.
Tier 3: Audited Used
Verified Used Baseline.
✓ CURRENT STATUS
Technical Notice: Custom Asset Integration
This is a professional-grade custom R&D asset engineered for tight-tolerance feedthrough integration. Please verify your internal shaft/lead dimensions against the 0.36" central bore diameter prior to commissioning.
BLUE DIAMOND PROTECTION PROTOCOL: ACTIVE
TOP RATED PROTECTION: This listing qualifies for Free 30-Day Domestic Returns. Per eBay Seller Protection policy, any item returned in a condition different from the original shipment (including damaged knife-edges, altered bore geometry, or evidence of system contamination) will result in a 50% deduction from the refund to account for the immediate loss in technical utility and resale value.