---
product_id: 210072882
title: "Cosmoline RP-342 Black Rust Preventive Spray (Military-Grade) 9-Cans"
brand: "cosmoline direct, llc"
price: "¥49404"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/210072882-cosmoline-rp-342-black-rust-preventive-spray-military-grade-9
store_origin: JP
region: Japan
---

# Fast 25-min dry time Matte black, chip-resistant finish Military-grade rust defense Cosmoline RP-342 Black Rust Preventive Spray (Military-Grade) 9-Cans

**Brand:** cosmoline direct, llc
**Price:** ¥49404
**Availability:** ✅ In Stock

## Summary

> 🛠️ Protect like a pro, dry in a flash, stay flawless for years!

## Quick Answers

- **What is this?** Cosmoline RP-342 Black Rust Preventive Spray (Military-Grade) 9-Cans by cosmoline direct, llc
- **How much does it cost?** ¥49404 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/210072882-cosmoline-rp-342-black-rust-preventive-spray-military-grade-9)

## Best For

- cosmoline direct, llc enthusiasts

## Why This Product

- Trusted cosmoline direct, llc brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Unmatched Durability:** One coat shields metal surfaces for years—indoors or outdoors.
- • **Effortless Application:** Spray on dry surface, dry-to-touch in 25 minutes—done and dusted.
- • **Military-Trusted Formula:** Proven since WWII, trusted by armed forces and pros alike.
- • **Extreme Environment Ready:** Resists salt spray, chemicals, and harsh weather without cracking or washing off.
- • **Stealth Matte Black Finish:** Conceals rust and imperfections with a sleek, non-tacky coating.

## Overview

Cosmoline RP-342 is a military-grade, fast-drying black rust preventive spray that delivers long-lasting protection with a tough, chip-resistant matte finish. Trusted since WWII, it safeguards metal surfaces against corrosion, salt, and harsh environments with just one durable coat, drying in 25 minutes for quick, professional results.

## Description

Cosmoline RP-342 Black Rust Preventive Spray (Military-Grade) 9-Cans

## Features

- OUR STRONGEST, LONGEST-LASTING & FASTEST-DRYING Rust Preventive Aerosol, PERIOD! 1-coat can reliably protect any metal, steel, or iron surface (parts, equipment, tools, machinery, etc.) for Years!.....indoors or outdoors.
- DURABLE & TOUGH – Will not crack, craze, blister, run or “wash off”. RP-342 produces a dry-to-the-touch (non-tacky), amber, BLACK petroleum wax coating (perfect for concealing unsightly surfaces) that stands up to long-term salt spray, extreme temperatures and other harsh environments.
- EASY-TO-APPLY: Just spray onto a dry surface, dries in about 25 minutes; You’re Done!
- TRUSTED SINCE WWII – has been widely used & trusted by the U.S. Armed Forces, government agencies, commercial companies, and DIYers/consumers for generations.
- 1,000s of APPLICATIONS across commercial and private industries. Vehicle undercoating is one of the most popular applications. Easily stands up to road salt, chemicals, road debris and won’t wash off like many other undercoating products. One application/coating can protect for years.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Cosmoline Direct, LLC |
| Color | Black |
| Finish Type | Matte |
| Size | 12 Ounce (Pack of 9) |
| Item Volume | 12 Fluid Ounces |
| Special Feature | Chip Resistant, Fast-Drying |
| Paint Type | Spray |
| Specific Uses For Product | Vehicle Undercoating, Car Undercoat, Truck Undercoating, Rust Prevention, Rust Preventive |
| Surface Recommendation | Metal |
| Indoor/Outdoor Usage | Indoor, Outdoor |
| Item Form | Aerosol |
| Is Waterproof | False |
| Package Information | Can |
| Color Code | [BLACK] |
| Full Cure Time | 25 Minutes |
| Coverage | Long-term rust protection with multiple coat capability |
| Manufacturer | Flywheel Distribution, LLC |
| Dry Time In Hours | 2 |
| Product Dimensions | 5.51 x 6.69 x 9.84 inches |
| Item model number | RP-342 |
| Manufacturer Part Number | 342-1032-9 |
| Special Features | Chip Resistant, Fast-Drying |

## Product Details

- **Brand:** Cosmoline Direct, LLC
- **Color:** Black
- **Finish Type:** Matte
- **Size:** 12 Ounce (Pack of 9)
- **Item Volume:** 12 Fluid Ounces
- **Special Feature:** Chip Resistant, Fast-Drying
- **Paint Type:** Spray
- **Specific Uses For Product:** Vehicle Undercoating, Car Undercoat, Truck Undercoating, Rust Prevention, Rust Preventive
- **Surface Recommendation:** Metal
- **Indoor/Outdoor Usage:** Indoor, Outdoor

## Images

![Cosmoline RP-342 Black Rust Preventive Spray (Military-Grade) 9-Cans - Image 1](https://m.media-amazon.com/images/I/51DyRGK+acL.jpg)

## Available Options

This product comes in different **Size** options.

## Frequently Bought Together

- Cosmoline RP-342 Black Rust Preventive Spray (Military-Grade) 9-Cans
- 2 Pcs 2XAerosol Nozzle w/ 19.69in. 360 Degrees Extension Hose for Male Stem Spray Cans Fluid Auto Car Nozzle Film 4.5mm Extension H3C9

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-12*