--- product_id: 267575393 title: "Fiberglass Supply Depot Clear Mek Peroxide Catalyst Hardener 4oz Bottle" brand: "fiberglass supply depot" price: "29495CFA" currency: XOF in_stock: true category: "Fiberglass Supply Depot" url: https://www.desertcart.sn/products/267575393-fiberglass-supply-depot-clear-mek-peroxide-catalyst-hardener-4oz-bottle store_origin: SN region: Senegal --- # 1% catalyst ratio for 4 gal resin 4oz precision dosing versatile for marine & automotive Fiberglass Supply Depot Clear Mek Peroxide Catalyst Hardener 4oz Bottle **Brand:** fiberglass supply depot **Price:** 29495CFA **Availability:** ✅ In Stock ## Summary > ⚡ Cure with Confidence: The Pro’s Catalyst for Flawless Fiberglass Finishes ## Quick Answers - **What is this?** Fiberglass Supply Depot Clear Mek Peroxide Catalyst Hardener 4oz Bottle by fiberglass supply depot - **How much does it cost?** 29495CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/267575393-fiberglass-supply-depot-clear-mek-peroxide-catalyst-hardener-4oz-bottle) ## Best For - fiberglass supply depot enthusiasts ## Why This Product - Trusted fiberglass supply depot brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Bonus Measuring Kit:** Includes reusable cup & mix guide for effortless, accurate blending - • **Precision 4oz Bottle:** Compact size for controlled, waste-free resin curing - • **Pro-Grade Consistency:** Ensures reliable, uniform curing every time for professional results - • **Optimized 1% Mix Ratio:** Cures up to 4 gallons of polyester resin or gelcoat flawlessly - • **Versatile Composite Use:** Perfect for fiberglass repairs, boat building, surfboards & tooling ## Overview Fiberglass Supply Depot’s Clear MEKP Peroxide Catalyst Hardener is a 4oz liquid catalyst designed to initiate and control the curing of polyester resins, vinyl ester resins, and gelcoat systems. Trusted by professionals across marine, automotive, and composite fabrication industries, it offers precise dosing with a 1% catalyst ratio that cures up to 4 gallons of resin. The package includes a reusable measuring cup and mix ratio guide, making it ideal for small repairs, prototypes, and hobby projects requiring consistent, high-quality results. ## Description Fiberglass Supply Depot Clear Mek Peroxide Catalyst Hardener 4oz Bottle: desertcart.com: Industrial & Scientific ## Features - MEKP CATALYST FOR POLYESTER RESIN & GELCOAT – Clear liquid methyl ethyl ketone peroxide (MEKP) catalyst designed for use with polyester resins, vinyl ester resins, and gelcoat systems in fiberglass fabrication, repair, and composite manufacturing applications. - VERSATILE COMPOSITE APPLICATIONS – Commonly used for fiberglass repairs, boat building, marine maintenance, mold making, automotive composites, surfboard construction, tooling, and general composite fabrication projects. - PROMOTES PROPER RESIN CURING – Helps initiate the curing process when used according to resin manufacturer recommendations, supporting consistent hardening and dependable results across a variety of fiberglass and composite applications. - COMPACT 4 OZ BOTTLE – Ideal size for small repairs, maintenance work, hobby projects, prototype fabrication, and shop use where a smaller quantity of catalyst is preferred for controlled dispensing and storage. - INCLUDES MEASURING CUP & MIX RATIO GUIDE – Comes with a reusable measuring cup and MEKP catalyst percentage chart to simplify mixing. The included 4 oz bottle provides enough catalyst to cure approximately 4 gallons of polyester resin or gelcoat when used at a 1% catalyst ratio, helping reduce waste and improve mixing accuracy for fiberglass and composite projects. - TRUSTED BY COMPOSITE PROFESSIONALS – Suitable for marine, automotive, industrial, and general fiberglass applications. Packaged by Fiberglass Supply Depot, a trusted supplier serving fiberglass and composite customers ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08PMVK4DR | | Best Sellers Rank | #21,604 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #91 in Commercial All-Purpose Cleaners | | Brand Name | Fiberglass Supply Depot | | Color | Clear | | Customer Reviews | 4.6 4.6 out of 5 stars (159) | | 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 | | Part Number | mek4ozb | | Specification Met | True | | UPC | 819794022743 | | Unit Count | 4 Fluid Ounces | ## Product Details - **Brand:** Fiberglass Supply Depot - **Color:** Clear - **Item Form:** Liquid - **Material:** mek peroxide - **Shape:** Flat ## Images ![Fiberglass Supply Depot Clear Mek Peroxide Catalyst Hardener 4oz Bottle - Image 1](https://m.media-amazon.com/images/I/61lBjlpGhgL.jpg) ![Fiberglass Supply Depot Clear Mek Peroxide Catalyst Hardener 4oz Bottle - Image 2](https://m.media-amazon.com/images/I/61hibaEJzdL.jpg) ![Fiberglass Supply Depot Clear Mek Peroxide Catalyst Hardener 4oz Bottle - Image 3](https://m.media-amazon.com/images/I/81d+nrrNVtL.jpg) ![Fiberglass Supply Depot Clear Mek Peroxide Catalyst Hardener 4oz Bottle - Image 4](https://m.media-amazon.com/images/I/81OdcnXI7-L.jpg) ![Fiberglass Supply Depot Clear Mek Peroxide Catalyst Hardener 4oz Bottle - Image 5](https://m.media-amazon.com/images/I/81fr-++BOcL.jpg) ## Questions & Answers **Q: shelf life?** A: 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. ## Frequently Bought Together - Mek Peroxide Catalyst 4oz Clear - Wax Additive - 4 oz Surfacing Agent for use with Gelcoat and Polyester resins - MEK Peroxide Adjustable Volume Dispensing bottle 16oz. (500ml) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sn/products/267575393-fiberglass-supply-depot-clear-mek-peroxide-catalyst-hardener-4oz-bottle](https://www.desertcart.sn/products/267575393-fiberglass-supply-depot-clear-mek-peroxide-catalyst-hardener-4oz-bottle) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-08-04*