--- product_id: 144553611 title: "Midwest Tungsten Diffusion Pump Oil, High Vacuum, Dow Corning Equivalent, for Higher Resistant to Hydrolysis & Oxidation, Free MSDS Sheet (MT-704), 250cc" brand: "midwest tungsten service" price: "£147.50" currency: GBP in_stock: true url: https://www.desertcart.co.uk/products/144553611-midwest-tungsten-diffusion-pump-oil-high-vacuum-dow-corning-equivalent store_origin: GB region: United Kingdom --- # High Vacuum Performance Quick Pumpdown Feature Hydrolysis & Oxidation Resistant Midwest Tungsten Diffusion Pump Oil, High Vacuum, Dow Corning Equivalent, for Higher Resistant to Hydrolysis & Oxidation, Free MSDS Sheet (MT-704), 250cc **Brand:** midwest tungsten service **Price:** £147.50 **Availability:** ✅ In Stock ## Summary > 🚀 Elevate Your Vacuum Game with Unmatched Reliability! ## Quick Answers - **What is this?** Midwest Tungsten Diffusion Pump Oil, High Vacuum, Dow Corning Equivalent, for Higher Resistant to Hydrolysis & Oxidation, Free MSDS Sheet (MT-704), 250cc by midwest tungsten service - **How much does it cost?** £147.50 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/144553611-midwest-tungsten-diffusion-pump-oil-high-vacuum-dow-corning-equivalent) ## Best For - midwest tungsten service enthusiasts ## Why This Product - Trusted midwest tungsten service brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Enhanced Longevity:** Exceptional resistance to hydrolysis and oxidation for prolonged use. - • **Durable Formulation:** Crafted with advanced mixed phenylmethyl dimethyl cyclosiloxane for optimal diffusion. - • **Efficient Performance:** Ideal for demanding industrial processes like brazing, E-Beam welding, and coating. - • **Reliable & Safe Packaging:** Convenient gallon size minimizes spills and leaks during transport. - • **Equivalent to Industry Standard:** Meets the performance of Dow Corning DC-704 for high vacuum applications. ## Overview Midwest Tungsten Diffusion Pump Oil (MT-704) is a high-performance vacuum pump oil designed for demanding industrial applications. Packaged in a safe gallon size, it offers exceptional resistance to hydrolysis and oxidation, ensuring long-lasting efficiency and reliability. This oil is equivalent to Dow Corning DC-704, making it a trusted choice for high vacuum environments. ## Description Dow Corning no longer offers DC-704 for sale. Midwest Tungsten has filled the gap by offering private label 704 chemically equivalent products in 250 cc bottles. MT-704 diffusion pump fluid is a single component fluid for high vacuums of 10E-6 to 10E-8 torr, untrapped or 10E-10 to 10E-11, trapped. It performs well in tough, rugged applications and offers quick pumpdown, even after exposure to air at operating temperatures, although this is not recommended. Replacement for and equivalent to Dow Corning DC-704. Sold as DS-704, KJLC 704, and Invoil 704 elsewhere. ## Features - Reliable and Safe:The oil is packaged in a safe and convenient gallon size to reduce the likelihood of spills or leaks during transport. It's crucial to carefully follow the instructions on the MSDS sheet and take proper safety measures when handling - Vacuum production : Vaccum pump oil is EQUIVALENT to Dow Corning DC-704 diffusion pump oil for use in high vacuum production environments - Durability and Efficiency: Ideal for challenging and demanding applications, with a quick pumpdown feature that efficiently removes gas molecules from the vacuum chamber. It remains the industry standard for various industrial processes such as brazing/soldering, E-Beam welding, and large-area coating, ensuring reliable and efficient performance. - "Formulation: Diffusion pump oil is formulated with mixed phenylmethyl dimethyl cyclosiloxane (Tetramethyl tetraphenyl trisiloxane.) used only as a diffusion pumping oil. " - Enhanced Oil Durability: The oil's exceptional resistance to hydrolysis and oxidation means it stays in top condition for longer periods, delivering consistent high performance and reducing the need for frequent maintenance. ## Images ![Midwest Tungsten Diffusion Pump Oil, High Vacuum, Dow Corning Equivalent, for Higher Resistant to Hydrolysis & Oxidation, Free MSDS Sheet (MT-704), 250cc - Image 1](https://m.media-amazon.com/images/I/51wkjvysGnL.jpg) ![Midwest Tungsten Diffusion Pump Oil, High Vacuum, Dow Corning Equivalent, for Higher Resistant to Hydrolysis & Oxidation, Free MSDS Sheet (MT-704), 250cc - Image 2](https://m.media-amazon.com/images/I/51Ap+zY0DCL.jpg) ![Midwest Tungsten Diffusion Pump Oil, High Vacuum, Dow Corning Equivalent, for Higher Resistant to Hydrolysis & Oxidation, Free MSDS Sheet (MT-704), 250cc - Image 3](https://m.media-amazon.com/images/I/615rI8IwPWL.jpg) ![Midwest Tungsten Diffusion Pump Oil, High Vacuum, Dow Corning Equivalent, for Higher Resistant to Hydrolysis & Oxidation, Free MSDS Sheet (MT-704), 250cc - Image 4](https://m.media-amazon.com/images/I/71kcx2zbG7L.jpg) ![Midwest Tungsten Diffusion Pump Oil, High Vacuum, Dow Corning Equivalent, for Higher Resistant to Hydrolysis & Oxidation, Free MSDS Sheet (MT-704), 250cc - Image 5](https://m.media-amazon.com/images/I/61Wd4+H48PL.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/144553611-midwest-tungsten-diffusion-pump-oil-high-vacuum-dow-corning-equivalent](https://www.desertcart.co.uk/products/144553611-midwest-tungsten-diffusion-pump-oil-high-vacuum-dow-corning-equivalent) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-23*