---
product_id: 541543148
title: "Loctite 37509 Klean 'N Prime Anaerobic Active"
price: "€ 48.31"
currency: EUR
in_stock: true
url: https://www.desertcart.it/products/541543148-loctite-37509-klean-n-prime-anaerobic-active
store_origin: IT
region: Italy
---

# Speeds up anaerobic cure times Works on all metals, even inactive ones Cures efficiently below 41°F (5°C) Loctite 37509 Klean 'N Prime Anaerobic Active

**Price:** € 48.31
**Availability:** ✅ In Stock

## Summary

> ⚡ Prime, bond, and conquer even the coldest metals!

## Quick Answers

- **What is this?** Loctite 37509 Klean 'N Prime Anaerobic Active
- **How much does it cost?** € 48.31 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/541543148-loctite-37509-klean-n-prime-anaerobic-active)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Accelerated Cure Speed:** Cuts down waiting time for threadlockers, sealers, and adhesives
- • **Low-Temperature Activation:** Optimized for curing in cold environments down to 41°F (5°C)
- • **Primer for Inactive Surfaces:** Essential for prepping challenging substrates like gold, silver, and passive metals
- • **Reliable Industrial Strength:** Delivers consistent, durable bonding for professional-grade applications
- • **Universal Metal Compatibility:** Ensures strong adhesion on plated, stainless steel, aluminum, and more

## Overview

Loctite 37509 Klean 'N Prime Anaerobic Active is a high-performance primer designed to enhance adhesion on inactive and passive metal surfaces. It enables reliable bonding on challenging substrates such as plated parts, stainless steel, and aluminum, while curing efficiently at temperatures as low as 41°F (5°C). This primer accelerates cure times for anaerobic adhesives, making it an essential tool for professionals seeking fast, durable, and dependable metal bonding solutions.

## Description

Loctite 37509 Klean 'N Prime Anaerobic Active

## Features

- DO YOU NEED A PRIMER? Use a primer when both surfaces are considered inactive (ie. plated parts, stainless steel, gold & silver, aluminum, etc.)
- RELIABLE ADHESION. Works on all metals, including passive substrates & inactive materials.
- LOW TEMP CURE. Perfect for low temperature curing, < 41F (< 5C).
- CUT CURE TIME. Designed to speed up cure times for anaerobic threadlockers, sealers, gasketing & adhesives.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002KKTSG |
| Best Sellers Rank | #22,510 in Automotive ( See Top 100 in Automotive ) #72 in Care Corrosion & Rust Inhibitors #1,094 in Oils & Fluids |
| Brand | Loctite |
| Color | Gold |
| Date First Available | July 7, 2004 |
| Global Trade Identification Number | 00079340375093 |
| Item Form | Spray |
| Item Package Quantity | 1 |
| Item Volume | 4.5 Fluid Ounces |
| Item Weight | 6.7 ounces |
| Item model number | 37509 |
| Manufacturer | Loctite |
| Material | Silicone |
| Number of Pieces | 1 |
| Package Information | Can |
| Product Dimensions | 5.6 x 2.17 x 2.17 inches |
| Specific Uses For Product | Fleet and plant maintenance. |
| UPC | 079340375093 |
| Unit Count | 4.5 Ounce |
| Viscosity | High Viscosity |
| Viscosity Level | High |
| Water Resistance Level | Water Resistant |

## Product Details

- **Specific uses for product:** Interior
- **Material:** Acrylic
- **Compatible material:** Metal
- **Item form:** Spray
- **Special features:** Low Temperature Cure & Inactive Surface Primer

## Images

![Loctite 37509 Klean 'N Prime Anaerobic Active - Image 1](https://m.media-amazon.com/images/I/61klVVl5+eL.jpg)

## Questions & Answers

**Q: Would it be good to use this to prime Barrel Threads with certain coatings before using threadlock for mounting different Muzzle devices?**
A: Nope it contains acetone. It will take the bluing off.

**Q: What is the difference between this and 19269 / 7649? I'd like to use a primer for 271. TY.**
A: 7649 type of primer and this is primer N and 19269 size and type of container , this one is  1.75 fluid ounce glass bottle.

**Q: Is this primer necessary when only on surface is inactive, as in moly steel and aluminum?**
A: Since Loctite anaerobic products cure through both the absence of oxygen and the presence of active metal ions, it is often suggested to use a primer on the surface of inactive metals, such as the ones mentioned, in order to achieve a cure time that is similar to that on an active metal, such as steel. The primer may not always be required though, so it is always best to test it for your application.

**Q: Should I use this on loctite 545 with brass and stainless threads?**
A: If applied to stainless, it will speed the cure from that side. Since brass is very "active", not required on that side. Because the brass is so active, may not even need the primer on the stainless.

## Frequently Bought Together

- Loctite 37509 Klean 'N Prime Anaerobic Activator Aerosol Can - 4.5 oz.
- Loctite 37482 545 Pneumatic/Hydraulic Thread Sealant Bottle - 36 ml
- Loctite 1329467 243 Blue Medium Strength Threadlockers, 1.69 Ounces, 50 mL, 3/4" Thread

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-01-29*