Forensic Technical Specification Brochure
| Forensic Specification Parameter | Verified Component Metric |
|---|---|
| Manufacturer (OEM) | Kurt J. Lesker Company (KJLC Vacuum Division, Jefferson Hills, PA, USA) |
| OEM Model Designation / MPN | VPZL-450XLG (Zero-Length Kodial Viewport with X-Ray Protection Disc) |
| OEM SKU / Internal Part Code | SKU0321363 (Factory Traveler / Lot Tracking: VR10-0066346) |
| OEM Master Taxonomy | FUSE-SUPR VIEWPORT, ZERO-LENGTH, 4-1/2" UHV, W/ LEAD GLASS DISC |
| Component Classification | Non-Motion / Optical Diagnostic Viewport with Personnel Radiation Attenuation Shield |
| Mounting Flange Standard | 4.50″ ConFlat Flange (DN63CF / NW63CF / 4.470″ [113.5 mm] OD) Non-Rotatable |
| Flange Bolting Geometry | 8x Clearance Thru-Holes (5/16″-24 UNF High-Tensile Hardware / BCD: 3.628″ [92.1 mm]) |
| Optical Window Architecture | Zero-Length Flush Internal Mount (Window Glass Coplanar with Gasket Face) |
| Clear Optical Viewing Aperture | 2.56 Inches Diameter (65.0 mm Full Unobstructed Optical Line-of-Sight) |
| Primary Vacuum Optic Material | Kodial Alkali-Borosilicate Glass (Corning 7056 Structural Equivalent / 0.12″ [3.0 mm] Thick) |
| Secondary Radiation Shielding Optic | High-Density Lead-Doped Optical Glass Disc (X-Ray Protection / 0.24″ [6.0 mm] Thick) |
| Glass-to-Metal Seal Technology | Matched Thermal Expansion Kovar (ASTM F15 Fe-Ni-Co Alloy) Hermetic Braze Sleeve |
| Flange Ring Metallurgy | AISI 304L Vacuum-Grade Stainless Steel (ASTM A240 / Low-Carbon Vacuum Remelt) |
| Polymer / Elastomer Content | 0% (100% Elastomer-Free, Hydrocarbon-Free All-Metal & Glass Hermetic Seal) |
| Operational Vacuum Floor | High Vacuum down to Extreme Ultra-High Vacuum (< 1 × 10⁻¹¹ Torr XHV/UHV Base) |
| Helium Mass Spec Leak Rate | 100% Certified Leak-Tight down to ≤ 1 × 10⁻¹¹ atm·cc/sec across Hermetic Boundary |
| Thermal Bakeout Dynamics | -20 °C to +350 °C Continuous UHV Bakeout (Controlled Ramp Rate ≤ 2 °C to 3 °C/min) |
| Primary Chamber Utility | E-Beam Evaporation, Ion-Beam Sputtering, Synchrotron Radiation, Plasma Diagnostics |
| Condition Designation | AUDITED NOS (Unissued Zero-Hour Asset / Pristine Factory Packaging / Verified Disc) |
Hardware Status Matrix
TOP RATED PROTECTION: This forensic audit asset qualifies for our Free 30-Day Domestic Returns policy. Sold in zero-hour AUDITED NOS uninstalled condition inside original Kurt J. Lesker labeled packaging (SKU0321363 / Lot VR10-0066346) with 100% factory-sharp ConFlat knife-edges, zero copper gasket witness marks, zero bolt compression marks, optical Kodial window 100% scratch-free, and verified intact secondary lead glass radiation shield disc. Per eBay Seller Protection policy for Top Rated Plus members, returning the item with installation witness marks, copper gasket impressions, chipped or scratched lead glass / Kodial optics, thermal shock stress fractures from unmanaged bakeouts (>350 °C or ramp rates >3 °C/min), or radial knife-edge gouges across the 4.50″ CF sealing face will result in an automatic, mandatory 50% refund deduction to offset the permanent loss in verified zero-hour UHV radiation-shielded viewport utility.