ComStarA/C Zero-Leak, Permanent "Stop Leak" for A/C Systems, Seals Leaks Instantly, Non-Hardening, Polymer-Free, Eco-Friendly, Made in USA, 4 Ounces (90-700)

ComStarA/C Zero-Leak, Permanent "Stop Leak" for A/C Systems, Seals Leaks Instantly, Non-Hardening, Polymer-Free, Eco-Friendly, Made in USA, 4 Ounces (90-700)

Q: I have a 4 ton system how many OZ will needed ?

A/C Zero Leak, as well as other types, uses the amount of refrigerant in a system to determine how much stop leak should be used, not by the size (Tons) of a system. The rule of thumb is 2 to 4 lbs of refrigerant per ton. Therefore, you need to find out how much refrigerant your system operates on. The minimum refrigerant in a 4-ton system would be 8 lb and the maximum would be 16 lbs. A/C Zero Leak dosage is 1 ounce per each lb of refrigerant.

Q: Is this a 4 oz or 2 oz product? Both figures are listed on the same product page.

My bottles contained 4 oz. Not sure if there is a smaller size available.

Q: It says compatible with poe systems. is this compatible with high voltage compressors in hybrids and electric cars?

A/C Zero Leak is compatible with POE oils and A/C systems in hybrids and EVs.

Product ID: 28481758

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Details

Material
Silicone
Brand
ComStar
Package Information
plastic
Liquid Volume
4 Fluid Ounces
Item Weight
4 Ounces

🌿Eco-friendly & polymer-free

💧Stops leaks instantly

⚙️Compatible with all A/C lubricants

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ComStar A/C Zero-Leak, Permanent "Stop Leak" for A/C Systems, Seals Leaks Instantly, Non-Hardening, Polymer-Free, Eco-Friendly, Made in USA, 4 Ounces (90-700)

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Description

💨 Seal the deal on leaks before they even start!

INSTANT LEAK SEALING 💧 - Permanently seals minor evaporator, condenser, gasket, and seal leaks without downtime.
ECO CONSCIOUS FORMULA 🌿 - Non-hardening, polymer-free, and environmentally safe—protect your system and the planet.
MAINTENANCE MADE EASY 🔧 - Designed for preventive use and safe to leave in operating A/C systems—no clogs, no worries.
OPTIMIZED DOSAGE CONTROL 📏 - 4 oz treats up to 12-ton systems; scalable dosing for larger units ensures precise, effective protection.
UNIVERSAL COMPATIBILITY ⚙️ - Works seamlessly with POE, PAG, and mineral oil-based A/C lubricants for automotive, commercial, and residential use.

ComStar A/C Zero-Leak is a 4-ounce, silicone-based liquid additive engineered to permanently stop minor leaks in automotive, commercial, and residential A/C systems. Its unique polymer-free, non-hardening formula ensures no clogging or damage, compatible with all major A/C lubricants, and safe for continuous use in operating systems. Eco-friendly and made in the USA, it offers a hassle-free, preventive maintenance solution for systems up to 12 tons, with scalable dosing for larger units.

Specifications

Material	Silicone
Brand	ComStar
Package Information	plastic container
Liquid Volume	4 Fluid Ounces
Item Weight	4 Ounces
Item Form	Liquid
Global Trade Identification Number	00024924907009
Manufacturer	ComStar International, Inc.
Unit Count	4.0 Ounce
UPC	024924907009
SAE J300 Viscosity Grade	5W-20
Number of Items	1
Item Weight	4 ounces
Package Dimensions	6.2 x 2 x 2 inches
Item model number	90-700
Manufacturer Part Number	90-700

Have a Question? See What Others Asked

I have a 4 ton system how many OZ will needed ?

Is this a 4 oz or 2 oz product? Both figures are listed on the same product page.

It says compatible with poe systems. is this compatible with high voltage compressors in hybrids and electric cars?

How bad is too bad of a leak ,for it not to work,mine leaks out in about a day n a half

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