LDS Vacuum 338‑200  Conflat Flange

This model 338-200 flange from LDS Vacuum is a premium vacuum component designed for reliable performance in high vacuum and ultra-high vacuum applications — ideal for scientific research labs, industrial vacuum systems, and educational lab use.

Key Features & Specifications:

• Outer diameter (OD) of flange: 3.38″ (~85.85 mm) — often referenced as “338-CF”.

• Tube/inner bore: 2.00″ (≈ 50.8 mm) tube OD.

• 8 clearance (through) bolt holes.

• Bolt hole diameter: 0.332″ (~8.43 mm).

• Material: 304 stainless steel (OD polished).

• Non-rotatable (fixed) design version or optional rotatable version depending on application. For example the half nipple variant is listed “Non-Rotatable (Fixed)”.

• Equivalent nomenclature: 3-3/8″ OD Conflat (CF), sometimes also referred to as DN50CF or NW50CF.

• Designed for compatibility with standard CF (Conflat) vacuum systems; suitable for HV/UHV environments.

Applications & Uses:

• Ideal for high-precision vacuum systems in physics, materials science, thin-film deposition, surface science, analytical instrumentation.

• Suitable for educational lab settings and research institutions needing robust vacuum components for experimental setups.

• Works well as a replacement or upgrade part in vacuum chambers, transfer lines, viewports, or custom vacuum assemblies.