Description
High-Build Primer Surfacer – 20oz Aerosol Can – Grey
High-Build Primer Surfacer is a flexible acrylic coating for priming steel, aluminum, urethane, fiberglass, and plastics.
Features:
- Provides superior adhesion
- Excellent filling properties
- Works on multiple substrates, including metal and plastic
- Easy to sand
- Topcoat with most refinish material
Applications:
- Steel
- Aluminum
- Plastic
- SMC
- Fiberglass
Properties:
- 20 oz. Aerosol
- Coverage: 11 sq. ft. at 2 mil DFT
- Coats: 2-3 medium wet
- Dry time: 1 hr
- Flash time: 5-10 min between coats

![SEM High-Build Primer Surfacer - 20oz Aerosol Can - Grey [42013]](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/sem-high-build-primer-surfacer-20oz-aerosol-can-grey-42013.webp)
![Raritan Heavy-Duty Push Button Switch - Brass [164000BR]](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/raritan-heavy-duty-push-button-switch-brass-164000br.webp)
![Furuno Bracket f /TZTL15F [001-337-420-00]](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/furuno-bracket-f-tztl15f-001-337-420-00.webp)
![Furuno Front Fixing Panel Kit f /TZTL15L [001-337-450-00]](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/furuno-front-fixing-panel-kit-f-tztl15l-001-337-450-00.webp)

![Sea-Dog Bilge Pump Water Alarm Panel w/Switch [423037-1]](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/sea-dog-bilge-pump-water-alarm-panel-w-switch-423037-1.webp)
![Forespar 27"-48" Twist-Lock Steering Control Arm Fits 7/8"-1" Wheels [104018]](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/forespar-27-48-twist-lock-steering-control-arm-fits-7-8-1-wheels-104018.webp)
![Humminbird GM H910 Gimbal Mount Bracket f /HELIX 9 & 10 [740149-1]](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/humminbird-gm-h910-gimbal-mount-bracket-f-helix-9-10-740149-1.webp)
