---
product_id: 424139094
title: "Dow Corning3145 Gray Rtv Mil-A-46146 Adhesive Sealant, Gray, 3 Oz. Tube"
brand: "dow corning"
price: "$344"
currency: NZD
in_stock: true
url: https://www.desertcart.nz/products/424139094-dow-corning3145-gray-rtv-mil-a-46146-adhesive-sealant-gray
store_origin: NZ
region: New Zealand
---

# 3 oz tube size One-part RTV Temp range -45 to 200°C Dow Corning3145 Gray Rtv Mil-A-46146 Adhesive Sealant, Gray, 3 Oz. Tube

**Brand:** dow corning
**Price:** $344
**Availability:** ✅ In Stock

## Summary

> Seal the Deal with Confidence! 🔒

## Quick Answers

- **What is this?** Dow Corning3145 Gray Rtv Mil-A-46146 Adhesive Sealant, Gray, 3 Oz. Tube by dow corning
- **How much does it cost?** $344 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/424139094-dow-corning3145-gray-rtv-mil-a-46146-adhesive-sealant-gray)

## Best For

- dow corning enthusiasts

## Why This Product

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

## Key Features

- • **Moisture Resistant:** Perfect for sealing in humid environments.
- • **Unmatched Strength:** Engineered for high-performance bonding.
- • **Military Grade Quality:** Meets UL and Mil Spec standards for reliability.
- • **User-Friendly Application:** Non-flow formula ensures precision and control.
- • **Versatile Temperature Range:** Withstands extreme conditions from -45 to 200°C.

## Overview

Dow Corning 3145 Gray RTV is a high-strength, one-part adhesive sealant designed for extreme conditions. This moisture-resistant sealant comes in a convenient 3 oz tube and is formulated with methyltrimethoxysilane, making it ideal for both professional and DIY applications. With a temperature range of -45 to 200°C, it meets stringent UL and Mil Spec standards, ensuring durability and reliability in any project.

## Description

Dow Corning3145 Gray Rtv Mil-A-46146 Adhesive Sealant, Gray, 3 Oz. Tube

## Features

- One-part, gray, moisture RTV, non-flow, high strength, UL and Mil Spec.
- Adhesive Material: Methyltrimethoxysilane.
- Color: Gray.
- Container Size: 3 oz.
- Container Type: Tube. Odor: Slight. Temperature Range: -45 to 200¡ãC.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Dow Corning |
| Compatible Material | Glass, Nylon |
| Item Form | Liquid |
| Special Feature | Thermal Stability |
| Color | Gray |
| Item Package Quantity | 1 |
| Package Information | Tube |
| Item Volume | 90 Milliliters |
| Specific Gravity | 1.1 Degrees Celsius |
| Full Cure Time | 48 Hours |
| Water Resistance Level | Water Resistant |
| Tensile Strength | 940 PSI |
| UPC | 632963585371 |
| Manufacturer | Dow Corning |
| Part Number | 3145 |
| Item Weight | 3 ounces |
| Package Dimensions | 6.73 x 1.81 x 1.34 inches |
| Item model number | MIL-A-46146 |
| Is Discontinued By Manufacturer | No |
| Size | 3oz tube |
| Style | Compact |
| Special Features | Thermal Stability |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![Dow Corning3145 Gray Rtv Mil-A-46146 Adhesive Sealant, Gray, 3 Oz. Tube - Image 1](https://m.media-amazon.com/images/I/41LiNN92YxL.jpg)

## Questions & Answers

**Q: can you use this product to adhere silicone to a hard plastic like acrylic?**
A: if the acrylic is cleaned well with isoproypl alcohol and lightly sanded, it will adhere.

**Q: wil this work on diesel holding tank? will diesel melt it?**
A: This is resistant to oils and chemicals once it is cured, but I worry that it may have problems adhering to the oily surface of the tank.

**Q: Is it truly gray? The product info specs say its clear, and I need gray only.**
A: It is gray.  I've been using this Dow Corning product for years.  It carries a military part number: MIL-A-46146 and has been very consistent.  It has an excellent useable shelf life, and does not have a vinegar smell to it like many silicone products.   I use it primarily to hold large electronic parts in place on printed circuit boards.

**Q: I’m gluing stained glass mosaic to clear glass and placing near heat. I’ll use clear product. Will the clear turn yellow over time?**
A: The 3145 grey RTV is not clear. It comes out and dries grey. However, it will not change color over-time.

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**Shop now:** [https://www.desertcart.nz/products/424139094-dow-corning3145-gray-rtv-mil-a-46146-adhesive-sealant-gray](https://www.desertcart.nz/products/424139094-dow-corning3145-gray-rtv-mil-a-46146-adhesive-sealant-gray)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-19*