Gear Aid Seam Grip Sealer and Adhesive - Repairs Nylon, Canvas, Seams, and Holes | eBay
Cranfield Clear Acrylic Canvas Sealer
How To Seal An Acrylic Painting - Step By Step Painting
Amazon.com: The Crafters Workshop Gesso Medium, Surface Preparation and Primer, Sealer for Canvas, Paper, Wood, Provides Sizing for Acrylic or Oils, Gesso, 8-oz, Clear