Top 6 Fiberglass Resin and Hardener – Automotive Sealants

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1. Bondo

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0.9 Gallon, Bondo Fiberglass Resin, 00404

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Bondo #ad - Can also be used as a sealer on damaged and rotted wood. Sandable in less than 2 hours; Flash point: 93. 33 degrees_celsius; Fit type: Universal Fit. Great on large or small metal rust-outs.

Can be used alone or with fiberglass tape, cloth or mat. Creates a strong and long lasting bond. Great on large or small metal rust-outs. Can be used alone or with fiberglass tape, cloth or mat. Creates a strong and long lasting bond. Includes bondo fiberglass resin liquid hardener for convenient, accurate mixing. Sandable in less than 2 hours. Can also be used as a sealer on damaged and rotted wood. Can be used alone as a sealer. For repairing, resurfacing and rebuilding a range of materials. Use during the fill stage of the 3m body repair system. Compatible with all paints including gel coat and marine paint.
BrandBondo #ad
Manufacturer3M #ad
Height11 Inches
Length7 Inches
Weight1 Pounds
Width5 Inches
Part Number404
Model3004.7879

2. isopon

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Isopon Hardener for Fiberglass Resin 0.70 oz., 1 Pack

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isopon #ad - 15g of hardener to be used per 16. 9 fl. Oz 500ml of resin. Reseal able. Easy to use. Conveniently packed in 02oz 5g sachets. Up5011. 053 oz.
Brandisopon #ad
ManufacturerIsopon #ad
Height0.3 Inches
Length3.7 Inches
Width2.4 Inches
Part NumberUP5011
ModelUP5011

3. Bondo

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Designed For Interior and Exterior Use, 1 tube, Bondo Fiberglass Resin Liquid Hardener, 0.74 Fl oz

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Bondo #ad - Apply to fiberglass, brick, wood, metal, and concrete surfaces. Once mixed, the fiberglass resin will cure in approximately 2 hours. Tube helps make application easy.

Results in a 100% waterproof repair. Liquid hardener designed to mix with Bondo polyester fiberglass resin and Bondo Metal Reinforced Filler requiring liquid hardener. Cannot be used by itself must be used with Fiberglass Resin or Metal Reinforced Filler. Creates chemical reaction with resin for fast curing. Great for interior and exterior projects. Use during the fill stage of the 3M Body Repair System. Use with bondo fiberglass resin for auto and home repairs including tubs, sinks, boats, pools, hot tubs, showers, and more.
BrandBondo #ad
Manufacturer3M AAD Consumer (Domestic) #ad
Height8.75 Inches
Length7 Inches
Weight0.05 Pounds
Width4.25 Inches
Part Number20126
Model20126

4. Bondo

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Durable, Strong, 100% Waterproof, Bondo Fiberglass Resin, 28.8 fl oz, Interior and Exterior Home Use

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Bondo #ad - Provides long-term structural strength when used with Bondo Fiberglass Cloth or Mat. High-strength polyester resin designed for interior and exterior home repair and building projects. 100% waterproof for use as a sealant and reliable tub, sink, shower, and auto repair. Includes bondo Liquid Hardener Easy for easy and accurate mix. Use for small to very large repairs to any fiberglass, metal, wood or masonry surface. 1 quart Can. Compatible with most paints and gel coats. Strong and versatile formula for multiple surfaces including concrete, wood, fiberglass, and metal.
BrandBondo #ad
ManufacturerBondo Home Solutions #ad
Height7.56 Inches
Length5 Inches
Weight0.62 Pounds
Width2.44 Inches
Part Number20122
Model3004.7858

5. Bondo

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.37 oz, Bondo Liquid Hardener, 00912

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Bondo #ad - Liquid hardener designed for Bondo polyester fiberglass resin and Bondo Metal Reinforced Filler requiring liquid hardener. Flash point: 93. 3 degrees_celsius. Easy mixing produces a better hardener and filler blend. Great for repairing auto bodies and boats. Results in a 100% waterproof repair. Use during the fill stage of the 3M Body Repair System. Creates chemical reaction with resin for fast curing.
BrandBondo #ad
Manufacturer3M #ad
Height1 Inches
Length8 Inches
Weight0.05 Pounds
Width5 Inches
Part Number912
Model912
WarrantyLIMITED WARRANTY

6. Bondo

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00762, 1 Quart, Bondo Bondo-Hair Long Strand Fiberglass Reinforced Filler

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Bondo #ad - Fill holes up to 1” wide and rebuild missing pieces without backing strips, cloth or mat. Fast dry formula allows for sanding in only 20 minutes.

Easy to use – includes step-by-step instructions. Filler comes with Bondo Red Cream Hardener. Versatile filler works with fiberglass, metal and wood. Long strands of chopped fiberglass deliver twice the strength of regular body filler. Suitable for challenging projects such as rebuilding missing pieces, vehicle restoration, shattered fiberglass repair, filling metal rust holes up to 1” in diameter. Use during the fill stage of the 3M Body Repair System. Compatible with most paints and paint systems. Waterproof formula works great on cars and boats.
BrandBondo #ad
Manufacturer3M AAD Consumer (Domestic) #ad
Height10 Inches
Length6 Inches
Weight0.5 Pounds
Width6 Inches
Part Number762
Model762