Here's an AI generated search results that I think may explain it:
A wood sealer is primarily used to create a barrier on the wood surface, preventing deep penetration of liquids like stains and water, while tung oil is a penetrating finish that soaks into the wood fibers, enhancing the natural grain and providing water resistance by filling the wood's pores, essentially acting as a protective layer within the wood itself; a sealer is often applied before a finish like tung oil to ensure even absorption of the finish, while tung oil can be used as a standalone finish on its own depending on the desired look and level of protection needed.
Key differences:
Function:
Wood sealer primarily blocks the wood's pores to prevent staining and moisture absorption, while tung oil penetrates deep into the wood to protect and enhance its natural appearance.
Application:
A wood sealer is typically applied as a first layer before applying a topcoat like tung oil, whereas tung oil can be applied directly to the wood surface with multiple coats to build up protection.
Aesthetic:
Wood sealer usually doesn't significantly alter the wood's appearance, while tung oil accentuates the wood grain and can add a slightly warm, honey-like color.
When to use each:
Wood sealer:
Use when you want to protect wood from significant moisture damage, prevent uneven stain absorption, or when applying a finish that might not penetrate well on its own.
Tung oil:
Use when you want to highlight the natural beauty of the wood, achieve a water-resistant finish, and prefer a more natural looking finish with minimal build-up.
