--- product_id: 349553562 title: "Dow Corning DC 4 Electrical Insulating Compound - 5.3 oz Tube" brand: "corning" price: "€ 90.21" currency: EUR in_stock: true reviews_count: 5 category: "Corning" url: https://www.desertcart.at/products/349553562-dow-corning-dc-4-electrical-insulating-compound-5-3-oz store_origin: AT region: Austria --- # High dielectric strength Superior moisture resistance Thermal stability -55ºC to +200ºC Dow Corning DC 4 Electrical Insulating Compound - 5.3 oz Tube **Brand:** corning **Price:** € 90.21 **Availability:** ✅ In Stock ## Summary > ⚡ Seal the deal with power and precision! ## Quick Answers - **What is this?** Dow Corning DC 4 Electrical Insulating Compound - 5.3 oz Tube by corning - **How much does it cost?** € 90.21 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/349553562-dow-corning-dc-4-electrical-insulating-compound-5-3-oz) ## Best For - corning enthusiasts ## Why This Product - Trusted corning brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Versatile Adhesion:** Bonds seamlessly to metals, ceramics, rubber, plastics, and insulating resins for multi-surface use - • **All-Weather Reliability:** Stay worry-free with moisture-proof sealing that defies humidity and water intrusion 💧 - • **Extreme Temperature Endurance:** Performs flawlessly from freezing cold to scorching heat (-55ºC to +200ºC) 🔥 - • **Unrivaled Electrical Protection:** Safeguard your connections with industry-leading dielectric strength ⚡ - • **Multi-Functional Seal & Lubricant:** Perfect for cable connectors, battery terminals, O-rings, and more—engineered for professional-grade assembly ## Overview Dow Corning DC 4 Electrical Insulating Compound is a premium silicone-based grease designed to provide exceptional dielectric strength and moisture resistance. It maintains a stable grease-like consistency across extreme temperatures (-55ºC to +200ºC) and adheres effectively to a wide range of materials, making it ideal for sealing and lubricating electrical connectors, battery terminals, and O-rings in demanding professional environments. ## Description Grease like material containing an inert silica filler in combination with selected polydimethyl silicone fluids APPLICATIONS A moisture proof seal for aircraft, automotive and marine ignition systems and spark plug connections, disconnection junctions in electrical wiring systems also in electrical assemblies and terminals.Used as a seal and lubricant for cable connectors, battery terminals, rubber door seals, switches and rubber and plastic O-rings and as a assembly lubricant for various metal-on-plastic and metal-on-rubber combinations Review: Helps prevent corrosion and keeps contacts clean - I bought a 1962 Mooney airplane once from a fellow who had a dry dock where they repaired barges and other vessels used in salt water. He gave me a tube of DOW DC 4 electrical insulating compound and suggested I use it on every power electrical contact I took apart. The Airframe & Powerplant mechanic who inspected my work bought some DOW #4 and started using it in his shop. That half tube lasted years and when it was gone I tried a variety of other greases, silicone, and electrical compounds. None lasted as well or worked as well at the DOW #4. I've used this on several late 50's Triumph TR3s with those darn Lucas bullet connectors which always get corroded. This won't remove corrosion but used when making repairs or replacing connectors it helps prevent corrosion and stays on the connection. Some of the products I tried just didn't last. After six months you could not tell that anything had been applied. Some of the silicone greases just dried up and were hard. I also use a dab of DOW #4 on the modern 'water proof' electrical connectors. They go together and come apart easier. I just replaced the entire wire harness in a late 50's Austin and every power connection (Lucas bullet connectors again) and socket in the entire car got some DOW #4. Under the dash and interior I used just a light wipe on the connections. In the engine compartment and under the car the connections, especially the ground connections, got a slight dab. This tube will probably last as long as I am still working on vehicles but if it doesn't I'll get more and not try any alternatives. This works, and lasts. Review: Buy two. - Man, I love this stuff. After I’d bought a former military HMMWV, I began going through the harnesses replacing the cracked/rotted Packard connectors, making harnesses for additional things like backup lights, light bar, etc. One of the sayings among FMV owners is “if it’s electric, clean it, if it’s rubber, change it” to which I add, use some Deoxit on the contacts and Dow Corning DC4 dielectric grease on the rubber parts. I’ve been led to believe that, unlike lighter silicone oils/sprays, this won’t soften/degrade the rubber connectors and it helps make a more easily removed connection and helps keep water out. Makes the rubber look shinier and new for years. I’ve used it on door seals, rubber grommets, wheel o-rings and more. You can use it on stainless steel screws/bolts to keep the nuts from galling. It’s really great stuff, also great for schmearing on battery terminals to keep them from oxidizing. I went through an entire tube in about six months, half the next one in the next year or so, just bought another tube “for later.” Try it, you’ll like it. ## Features - High dielectric strength and highly water repellent - Moisture resistantance - Good thermal oxidation and chemical stability - Retains its grease like consistency from -55ºC(-67ºF) to +200ºC(392ºF) - Adheres readily to dry metals, ceramics, rubber, plastics and insulating resins - Used as a seal and lubricant for cable connectors, battery terminals, rubber door seals, switches and rubber and plastic O-rings and as a assembly lubricant for various metal-on-plastic and metal-on-rubber combinations. ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | Dow Corning | | Country of Origin | USA | | Item part number | 1927574 | | Package Dimensions | 20.8 x 5.31 x 4.39 cm; 168 g | | ASIN | B001VXSAI4 | ## Images ![Dow Corning DC 4 Electrical Insulating Compound - 5.3 oz Tube - Image 1](https://m.media-amazon.com/images/I/519YrYwJA1L.jpg) ## Questions & Answers **Q: Is this the updated one?** A: I don't know if this is the updated one but it does separate. it make a real mess if you aren't careful **Q: High temperature?** A: DC4, also called Molykote4, has a specified usable temperature range of -40 to +200 degrees C (or approx -40 to +390 degrees F). It is not intended for extreme high temperature use. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Helps prevent corrosion and keeps contacts clean *by J***S on 20 June 2023* I bought a 1962 Mooney airplane once from a fellow who had a dry dock where they repaired barges and other vessels used in salt water. He gave me a tube of DOW DC 4 electrical insulating compound and suggested I use it on every power electrical contact I took apart. The Airframe & Powerplant mechanic who inspected my work bought some DOW #4 and started using it in his shop. That half tube lasted years and when it was gone I tried a variety of other greases, silicone, and electrical compounds. None lasted as well or worked as well at the DOW #4. I've used this on several late 50's Triumph TR3s with those darn Lucas bullet connectors which always get corroded. This won't remove corrosion but used when making repairs or replacing connectors it helps prevent corrosion and stays on the connection. Some of the products I tried just didn't last. After six months you could not tell that anything had been applied. Some of the silicone greases just dried up and were hard. I also use a dab of DOW #4 on the modern 'water proof' electrical connectors. They go together and come apart easier. I just replaced the entire wire harness in a late 50's Austin and every power connection (Lucas bullet connectors again) and socket in the entire car got some DOW #4. Under the dash and interior I used just a light wipe on the connections. In the engine compartment and under the car the connections, especially the ground connections, got a slight dab. This tube will probably last as long as I am still working on vehicles but if it doesn't I'll get more and not try any alternatives. This works, and lasts. ### ⭐⭐⭐⭐⭐ Buy two. *by N***B on 27 February 2019* Man, I love this stuff. After I’d bought a former military HMMWV, I began going through the harnesses replacing the cracked/rotted Packard connectors, making harnesses for additional things like backup lights, light bar, etc. One of the sayings among FMV owners is “if it’s electric, clean it, if it’s rubber, change it” to which I add, use some Deoxit on the contacts and Dow Corning DC4 dielectric grease on the rubber parts. I’ve been led to believe that, unlike lighter silicone oils/sprays, this won’t soften/degrade the rubber connectors and it helps make a more easily removed connection and helps keep water out. Makes the rubber look shinier and new for years. I’ve used it on door seals, rubber grommets, wheel o-rings and more. You can use it on stainless steel screws/bolts to keep the nuts from galling. It’s really great stuff, also great for schmearing on battery terminals to keep them from oxidizing. I went through an entire tube in about six months, half the next one in the next year or so, just bought another tube “for later.” Try it, you’ll like it. ### ⭐⭐⭐⭐⭐ This stuff works!! *by M***N on 3 December 2021* I have used this for electrical projects for most all of 25 years, never disappointed with it. ## Frequently Bought Together - Dow Corning DC 4 Electrical Insulating Compound - 5.3 oz Tube - Molykote DOW 111 Lubricant & Sealant, 5.3 oz. Tube - Dow Corning Molykote 55 Oring Grease 5.3oz --- ## 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.at/products/349553562-dow-corning-dc-4-electrical-insulating-compound-5-3-oz](https://www.desertcart.at/products/349553562-dow-corning-dc-4-electrical-insulating-compound-5-3-oz) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-09-15*