LDS Vacuum NW40-B100 Stainless Steel Bored Weld Flange – LOT OF 2

The LDS NW40-B100 is a bored weld flange designed for use in vacuum and high-vacuum systems. It features an NW40 (KF40) outer flange interface, bored to a 1.00″ (≈ 25.4 mm) inner diameter and constructed from 304 stainless steel.

Key Features:

• Flange Standard: NW40 (KF40) high-vacuum flange (also referenced as QF40, ISO-QF) with outer diameter of Ø2.18″.

• Bore Size: 1.00″ (≈ 25.4 mm) — suitable for standard inch-OD tubing.

• Material: 304 stainless steel (ensuring corrosion resistance, vacuum compatibility, good weldability)

• Dimensions: As per LDS: A = 0.20″, B = 1.01″, C = 0.90″.

• Welding Type: Bored weld flange (i.e., designed to be welded into a vacuum line).

• Compatibility: Compatible with NW40/KF40 systems for vacuum applications.

Applications:
This flange is especially suitable for building or repairing vacuum chambers, ultra-high vacuum lines, semiconductor process equipment, research labs, and other industrial vacuum setups. Its bored 1″ passage allows the integration of 1″ tubing or adapters while maintaining the proven NW40 flange interface.