KF40 Stainless Steel Weldable Flange (SS 304) – ISO-KF40 Vacuum Fitting, 40 mm Long (Set of 5)

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Close-up view showing the machined detail of a KF stainless steel weldable flange with 40mm tube.
Multiple KF stainless steel weldable flanges with 40mm weld stubs arranged together.
Side view of a KF stainless steel weldable flange showing its long 40mm tube extension.
Top-down view of a KF weldable flange with a 40mm stainless steel tube.
Angled stainless steel KF weldable flange with 40mm extended weld stub.
Front view of a KF stainless steel weldable flange with a 40mm long weld stub.
Close-up view showing the machined detail of a KF stainless steel weldable flange with 40mm tube.
Multiple KF stainless steel weldable flanges with 40mm weld stubs arranged together.
Side view of a KF stainless steel weldable flange showing its long 40mm tube extension.
Top-down view of a KF weldable flange with a 40mm stainless steel tube.
Angled stainless steel KF weldable flange with 40mm extended weld stub.
Front view of a KF stainless steel weldable flange with a 40mm long weld stub.
Close-up view showing the machined detail of a KF stainless steel weldable flange with 40mm tube. KF25 Stainless Steel Weldable Flange (SS 304) – ISO-KF25 Vacuum Fitting, 40 mm Long (Set of 5)

KF40 Stainless Steel Weldable Flange (SS 304) – ISO-KF40 Vacuum Fitting, 40 mm Long (Set of 5)

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Original price was: ₹4,350.00.Current price is: ₹3,915.00.

ISO-KF40 stainless steel weldable flange made from corrosion-resistant SS 304, designed for permanent welding into vacuum chambers and pipelines. Compatible with standard KF40 clamps, centering rings, and seals. Supplied as a set of 5 pieces for high and medium vacuum applications.

Availability: 100 in stock SKU: UHVS KF40-40WF Category: Tags: , , , , , ,
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Description

Product Overview

The KF40 stainless steel weldable flange is a standard ISO-KF vacuum component used to create permanent, leak-tight connections in vacuum chambers, pipelines, and custom-fabricated vacuum systems. The weldable stub allows direct integration into stainless steel vacuum assemblies while maintaining full compatibility with standard KF40 clamping hardware.

Manufactured from AISI 304 stainless steel, this flange offers excellent corrosion resistance, mechanical strength, and reliability for industrial and laboratory vacuum applications. The 40 mm weld length ensures secure welding while preserving accurate alignment and vacuum sealing performance.

Key Features

  • ISO-KF40 (NW-40) standard vacuum flange

  • Weld-on design for permanent vacuum connections

  • Manufactured from high-quality SS 304 stainless steel

  • Corrosion-resistant and durable construction

  • Compatible with KF40 clamps, centering rings, and elastomer seals

  • Suitable for medium and high vacuum applications

  • Supplied as a set of 5 flanges

Technical Specifications

Parameter Specification
Flange Standard ISO-KF / NW-40
Nominal Size KF40
Material Stainless Steel 304
Weld Length 40 mm
Connection Type Weldable
Vacuum Range Medium to High Vacuum
Compatibility KF40 clamps, seals & centering rings
Quantity Set of 5

Applications

Suitable for use in a wide range of vacuum systems, including:

  • Research & Development

  • Semiconductor processing

  • Aerospace and space simulation systems

  • PVD / CVD coating systems

  • Chemical and process vacuum setups

  • Industrial vacuum pipelines

  • Pharmaceutical and laboratory vacuum systems

Actual usage and configuration depend on process and system requirements.

Why Buy from Ultrahivac

  • Reliable industrial-grade vacuum components

  • Technical support for system integration

  • Compatibility with standard ISO-KF vacuum hardware

  • Trusted supplier for research and industrial vacuum users

FAQs

Is this flange compatible with standard KF40 vacuum clamps?
Yes, this flange is fully compatible with standard ISO-KF40 clamps, centering rings, and seals.

Can this flange be used for high vacuum systems?
Yes, when properly welded and sealed, it is suitable for medium to high vacuum applications.

What material is used for this flange?
The flange is manufactured from corrosion-resistant SS 304 stainless steel.

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