---
product_id: 62842508
title: "4-Way KF (QF) Reducer Crosses, ISO-KF Flange Size NW-40 to NW-25 Vacuum Fittings, 304 Stainless Steel Adapter Vacuum Oven Fitting"
brand: "lab outlet"
price: "$247"
currency: NZD
in_stock: true
category: "Lab Outlet"
url: https://www.desertcart.nz/products/62842508-4-way-kf-qf-reducer-crosses-iso-kf-flange-size
store_origin: NZ
region: New Zealand
---

# Quick-assemble clamp & reusable elastomer seal ISO-KF NW-40 to NW-25 precision fit 304 stainless steel corrosion resistance 4-Way KF (QF) Reducer Crosses, ISO-KF Flange Size NW-40 to NW-25 Vacuum Fittings, 304 Stainless Steel Adapter Vacuum Oven Fitting

**Brand:** lab outlet
**Price:** $247
**Availability:** ✅ In Stock

## Summary

> 🔧 Elevate your vacuum game with precision and speed!

## Quick Answers

- **What is this?** 4-Way KF (QF) Reducer Crosses, ISO-KF Flange Size NW-40 to NW-25 Vacuum Fittings, 304 Stainless Steel Adapter Vacuum Oven Fitting by lab outlet
- **How much does it cost?** $247 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/62842508-4-way-kf-qf-reducer-crosses-iso-kf-flange-size)

## Best For

- lab outlet enthusiasts

## Why This Product

- Trusted lab outlet brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Compatibility:** Reducer cross adapts NW-40 to NW-25 flange sizes, perfect for complex vacuum plumbing and foreline applications.
- • **Seamless Vacuum Integration:** ISO-KF standard flanges ensure airtight, reliable connections for high-vacuum systems.
- • **Durable Stainless Steel Build:** Premium 304 stainless steel resists corrosion, guaranteeing longevity in demanding environments.
- • **Precision Engineered Dimensions:** Compact 5.12" x 2.22" size fits seamlessly into your vacuum system without bulk.
- • **Effortless Assembly & Maintenance:** Quick flange design with reusable elastomer seals enables fast setup and repeated use without downtime.

## Overview

This 4-Way KF (QF) Reducer Cross vacuum fitting, crafted from corrosion-resistant 304 stainless steel, connects NW-40 to NW-25 ISO-KF flanges. Designed for high-vacuum applications, it features quick-assembly clamps and reusable elastomer seals for fast, reliable, and maintenance-friendly vacuum plumbing solutions.

## Description

These KF-40 to KF-25 Reducer Cross vacuum fittings follow ISO-KF standards and have a flange size of NW-40 to NW-25. They are commonly used to build foreline vacuum plumbing and process systems. They are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges. The centering ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of corrosive resistant 304 stainless steel.Specification:Reducer Cross KF-40 to KF-25ISO-KF Flange Size: NW-40 to NW-25Common Dimensions: A= 5.12" (130mm), B= 2.22" (58mm)Material: Stainless SteelMedium: Water, Oil, Gas and some corrosive liquidsApplications: Vacuum IndustryPackage included:1 * Reducer Cross

## Features

- ISO-KF Flange Size: NW-40 to NW-25, Common Dimensions: A= 5.12" (130mm), B= 2.22" (58mm)
- These KF-40 to KF-25 Reducer Cross vacuum fittings follow ISO-KF standards and have a flange size of NW-40 to NW-25.
- KF Flanges are ideal for high vacuum applications requiring frequent assembly and disassembly. Elastomer seals are reusable and allow for fast assembly.
- The KF (QF) flange is used for through- or foreline vacuum plumbing and for simple HV chamber ports.
- Material: Stainless Steel, Package included:1 * Reducer Cross

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01MSWDOZF |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #1,295,284 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3,912 in Hydraulic Fittings |
| Brand | LAB OUTLET |
| Color | Silver |
| Connector Type | Reducer |
| Date First Available | September 28, 2021 |
| Exterior Finish | Stainless Steel |
| Is Discontinued By Manufacturer | No |
| Manufacturer | LAB OUTLET |
| Material | Stainless Steel |
| Measurement System | inch, metric |
| Number of Pieces | 1 |
| Size | NW-40 to NW-25 (40mm to 25mm inner diameter) |
| Thread Type | KF |
| UPC | 644650671953 |

## Product Details

- **Brand:** LAB OUTLET
- **Color:** Silver
- **Connector Type:** Reducer
- **Exterior Finish:** Stainless Steel
- **Manufacturer:** LAB OUTLET
- **Material:** Stainless Steel
- **Number of Pieces:** 1
- **Size:** NW-40 to NW-25 (40mm to 25mm inner diameter)
- **Thread Type:** KF
- **UPC:** 644650671953

## Images

![4-Way KF (QF) Reducer Crosses, ISO-KF Flange Size NW-40 to NW-25 Vacuum Fittings, 304 Stainless Steel Adapter Vacuum Oven Fitting - Image 1](https://m.media-amazon.com/images/I/51CV4hIp6IL.jpg)
![4-Way KF (QF) Reducer Crosses, ISO-KF Flange Size NW-40 to NW-25 Vacuum Fittings, 304 Stainless Steel Adapter Vacuum Oven Fitting - Image 2](https://m.media-amazon.com/images/I/61ZJ7P41+GL.jpg)
![4-Way KF (QF) Reducer Crosses, ISO-KF Flange Size NW-40 to NW-25 Vacuum Fittings, 304 Stainless Steel Adapter Vacuum Oven Fitting - Image 3](https://m.media-amazon.com/images/I/61Bq-bg9uwL.jpg)
![4-Way KF (QF) Reducer Crosses, ISO-KF Flange Size NW-40 to NW-25 Vacuum Fittings, 304 Stainless Steel Adapter Vacuum Oven Fitting - Image 4](https://m.media-amazon.com/images/I/51WEbowKQsL.jpg)
![4-Way KF (QF) Reducer Crosses, ISO-KF Flange Size NW-40 to NW-25 Vacuum Fittings, 304 Stainless Steel Adapter Vacuum Oven Fitting - Image 5](https://m.media-amazon.com/images/I/61GpfcW7HNL.jpg)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-24*