Would it be good to use this to prime Barrel Threads with certain coatings before using threadlock for mounting different Muzzle devices?

Nope it contains acetone. It will take the bluing off.

What is the difference between this and 19269 / 7649? I'd like to use a primer for 271. TY.

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.

Is this primer necessary when only on surface is inactive, as in moly steel and aluminum?

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.

Should I use this on loctite 545 with brass and stainless threads?

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.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

37509 Klean 'N Prime Anaerobic Active

Product ID: 541543148

Details

Specific uses for product
Interior
Material
Acrylic
Compatible material
Metal
Item form
Spray
Special features
Low Cure &

⏱️Speeds up anaerobic cure times

⚙️Works on all metals, even inactive ones

❄️Cures efficiently below 41°F (5°C)

KD 14.78

Duties & taxes included

In stock

Sold byAmazon KUWAITDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to KUWAIT.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Description

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

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

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.

Specifications

ASIN	B0002KKTSG
Best Sellers Rank	#19,243 in Automotive ( See Top 100 in Automotive ) #72 in Care Corrosion & Rust Inhibitors #915 in Oils & Fluids
Date First Available	July 7, 2004
Item Weight	6.7 ounces
Item model number	494147
Manufacturer	Loctite
Product Dimensions	5.6 x 2.17 x 2.17 inches

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.