It has a shelf life of 7 months but anything over 90 days I would do a test because shelf life can vary depending on how it is stored. Heat is not its friend.

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Fiberglass Supply Depot Clear Mek Peroxide Catalyst Hardener 4oz Bottle

Product ID: 267575393

Details

Brand
Fiberglass
Color
Clear
Item Form
Liquid
Material
mek peroxide
Shape
Flat

⏱️fast curing catalyst

⚗️4oz precision dosing

🛠️multi-surface compatibility

R814

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Cure it fast, craft it flawless — your secret weapon in composite mastery!

TRUSTED BY PROS - Preferred by composite experts for consistent performance across industrial and hobbyist projects.
MIX WITH CONFIDENCE - Includes measuring cup and ratio guide to ensure perfect catalyst-to-resin balance every time.
PRECISION 4 OZ BOTTLE - Compact size for controlled, waste-free application on small to medium projects.
RAPID RESIN ACTIVATION - Kickstarts polyester and gelcoat curing fast for dependable, professional-grade results.
VERSATILE COMPOSITE USE - Perfect for marine, automotive, surfboards, tooling, and general fiberglass fabrication.

Clear Mek Peroxide Catalyst Hardener is a 4oz liquid MEKP catalyst designed to accelerate curing in polyester resins, vinyl ester resins, and gelcoat systems. Ideal for fiberglass repairs, marine maintenance, and composite fabrication, it offers precise dosing with an included measuring cup and ratio guide. Trusted by professionals and DIYers alike, it ensures fast, reliable hardening for durable, high-quality finishes.

Specifications

ASIN	B08PMVK4DR
Best Sellers Rank	#21,933 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #80 in Commercial All-Purpose Cleaners
Brand Name	Fiberglass Supply Depot
Color	Clear
Customer Reviews	4.6 4.6 out of 5 stars (172)
Grade Rating	Commercial/Industrial
Item Form	Liquid
Item Shape	Flat
Item Weight	4 ounces
Manufacturer	Fiberglass Supply Depot Inc.
Material	mek peroxide
Number of Items	1
Number of Packs	1
Part Number	mek4ozb
Specification Met	True
UPC	819794022743
Unit Count	4 Fluid Ounces

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