How to Use Ultra-Blak 400-L
Ultra-Blak 400-L is a liquid-based solution for users who want to blacken steel parts with a safer-to-add liquid solution rather than a powder.
Use Ultra-Blak 400-L to:
- Finish steel parts with a glossy black finish
- Work with a liquid solution rather than a dry powder
- Achieve superior abrasion resistance
- Give black-oxide baths an initial charge and replenish with powdered Ultra-Blak 400
- Meet MIL-DTL-13924D Class 1 and AMS 2485L standards
- Blacken a variety of steels, including carbon steel, steel alloys, and hardened tool steels
Ultra-Blak 400-L is the liquid version of Ultra-Blak 400.
This premium-grade liquid solution produces one of the darkest black finishes possible.
Drag out 1–5 gallons of Ultra-Blak 400-L per 100-gallon tank every week.
Samples available to purchase - CALL #262-786-9330.
PLEASE NOTE: Orders ship within 3 business days.



How to Use Ultra-Blak 400-L
Ultra-Blak 400-L is a liquid-based solution for users who want to blacken steel parts with a safer-to-add liquid solution rather than a powder.
Use Ultra-Blak 400-L to:
- Finish steel parts with a glossy black finish
- Work with a liquid solution rather than a dry powder
- Achieve superior abrasion resistance
- Give black-oxide baths an initial charge and replenish with powdered Ultra-Blak 400
- Meet MIL-DTL-13924D Class 1 and AMS 2485L standards
- Blacken a variety of steels, including carbon steel, steel alloys, and hardened tool steels