---
product_id: 369793705
title: "KF40 to KF25"
brand: "brownian motion technology"
price: "$80.03"
currency: USD
in_stock: null
reviews_count: 1
category: "Brownian Motion Technology"
url: https://www.desertcart.ec/products/369793705-kf40-to-kf25
store_origin: EC
region: Ecuador
---

# Seamless flange interface High conductance conical profile Durable stainless steel 304 KF40 to KF25

**Brand:** brownian motion technology
**Price:** $80.03
**Availability:** ❌ Out of Stock

## Summary

> 🌉 Connect with confidence — the ultimate KF flange reducer for pros who demand perfection

## Quick Answers

- **What is this?** KF40 to KF25 by brownian motion technology
- **How much does it cost?** $80.03 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/369793705-kf40-to-kf25)

## Best For

- brownian motion technology enthusiasts

## Why This Product

- Trusted brownian motion technology brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Lightweight:** Only 5 ounces, easy to integrate without adding bulk
- • **Precision Vacuum Seal:** Ensures airtight, leak-proof connections for critical applications
- • **Universal Compatibility:** Effortlessly connects KF40 to KF25 flanges, bridging different system sizes
- • **Optimized Conductance Design:** Conical profile maximizes flow efficiency between flange sizes
- • **Robust Stainless Steel Build:** Corrosion-resistant 304 stainless steel guarantees longevity and reliability

## Overview

The KF40 to KF25 conical reducer by Brownian Motion Technology is a precision-engineered stainless steel 304 adapter that seamlessly connects KF40 and KF25 vacuum flanges. Featuring a high conductance conical profile, it ensures optimal flow and a vacuum-tight seal, making it an essential component for industrial and scientific vacuum systems.

## Description

bmotiontech conical Reducer with ISO-KF Flange KF16 KF25 KF40 KF50 Stainless Steel 304 (KF40 to KF25 1pc): desertcart.com: Industrial & Scientific

Review: They work. - My KF connectors clamp onto each end of these well with centering o-rings and make a good, vacuum-tight seal.

## Features

- 1️⃣ 1PC KF40 (NW40) to KF25(NW25) conical reducer
- 🌉 Interface between KF40 flange to KF25 flange or vice versa
- ⛛ A high conductance conical profile is used between the two flanges
- ⚛️ Made of stainless steel 304

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08H59G34P |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #114,669 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #45 in Reducer Tube Fittings |
| Customer Reviews | 4.9 4.9 out of 5 stars (16) |
| Date First Available | September 1, 2020 |
| Item Weight | 5 ounces |
| Item model number | VAC-CONE-xxxx |
| Manufacturer | BROWNIAN MOTION TECHNOLOGY |
| Material | stainless steel |
| Package Dimensions | 4.33 x 2.72 x 2.05 inches |
| Part Number | VAC-CONE-xxxx |
| Style | KF40 to KF25 |

## Images

![KF40 to KF25 - Image 1](https://m.media-amazon.com/images/I/31FRoSxsXmL.jpg)
![KF40 to KF25 - Image 2](https://m.media-amazon.com/images/I/31VpRnZ2PNL.jpg)
![KF40 to KF25 - Image 3](https://m.media-amazon.com/images/I/41FuZnKFoQL.jpg)
![KF40 to KF25 - Image 4](https://m.media-amazon.com/images/I/41l2r3C8n5L.jpg)
![KF40 to KF25 - Image 5](https://m.media-amazon.com/images/I/516GWf6WA4L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ They work.
*by D***D on September 25, 2024*

My KF connectors clamp onto each end of these well with centering o-rings and make a good, vacuum-tight seal.

## Frequently Bought Together

- bmotiontech conical Reducer with ISO-KF Flange KF16 KF25 KF40 KF50 Stainless Steel 304 (KF40 to KF25 1pc)
- Aluminum KF40 NW40 Wing nut clamp Sets, Stainless Steel Centering Rings, FKM viton O-Ring (Aluminum KF40 2 sets)
- KF25 Flange Centering Ring x 10pcs < ISO-KF Flange, Stainless Steel Ring, FKM Viton O-Ring >

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**Shop now:** [https://www.desertcart.ec/products/369793705-kf40-to-kf25](https://www.desertcart.ec/products/369793705-kf40-to-kf25)

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-03-07*