Interlux Y31/QT Seam Compound White - Flexible Hull Seam Filler for Wooden Boats

Interlux Seam Compound (Y31/QT) is a durable, flexible sealing compound formulated specifically for filling and sealing hull seams on wooden boats above the waterline. Engineered to move with the natural expansion and contraction of wood planking, this compound maintains a long-lasting, watertight seal through seasonal changes and varying moisture conditions.

Key Features:

• Remains permanently pliable — accommodates the natural expansion and contraction of wooden planks without cracking or losing adhesion
• Highly adhesive — bonds tenaciously to properly prepared wood and painted surfaces above the waterline
• Easy application — smooth consistency allows effortless application with a standard putty knife
• Tight sealing performance — fills hull seams completely to prevent water intrusion
• White finish — paintable surface that blends cleanly under topcoats
• Quart size — generous volume suitable for full boat seaming projects

Interlux Y31 Seam Compound is an essential part of any wooden boat maintenance toolkit. It is designed for above-waterline use where plank movement is greatest, delivering the flexibility and adhesion needed to keep seams tight season after season. Compatible with Interlux topside paints and primers for a seamless finish.