Tung Oil: Polymerized VS Pure
In the past few years Walrus Oil's Tung Oil product line has earned best-seller status, trusted for being all natural, 100% pure, and void of any additives. In 2025 we expanded to Polymerized Tung Oil, which is strictly heat-bodied and contains no chemical driers. Since then the number one question we get asked is: What's the difference? It's a fair question, so here's a straightforward breakdown of both to help you decide which Tung Oil finish is the right fit for your next woodworking project.
PURE TUNG OIL – The Original, All-Natural Wood Finish
Brief Overview: Pure Tung Oil is tung oil in its most natural, unmodified form. It’s cold-pressed from the seeds of the tung tree and used exactly as nature produced it. Nothing added. Nothing removed. It has been used as a wood sealer for over 2,500 years, historically applied to wooden ships, furniture, and structural beams for its exceptional water resistance and penetrating protection. Pure Tung Oil penetrates deep into the grain, protecting from the inside out. Walrus Oil's Pure Tung Oil contains exactly one ingredient: 100% Pure Tung Oil. No secret ingredients.
Drying Time (Dries Slower): Because Pure Tung Oil is completely unprocessed, it cures entirely through natural oxidation and that process takes time. Depending on temperature, humidity, and type of wood, Pure Tung Oil can take several days to feel dry to the touch and up to a few weeks to fully cure and harden between coats.
Color and Sheen (Matte Finish): Pure Tung Oil cures to a matte finish that keeps the wood looking and feeling like wood. There’s no plastic, no film, and no artificial gloss appearance. The finish looks natural, making the wood's own character stand out.
Durability (Excellent Natural Protection): Tung oil has long been regarded as one of the most water-resistant natural wood finishes available, and our Pure Tung Oil is no exception. Once fully cured, it creates a durable, water-resistant barrier within the wood grain that resists moisture, mold, and mildew. Pure Tung Oil is well-suited for both indoor and outdoor applications, including outdoor furniture and garden boxes, as well as interior surfaces like dining tables and unfinished hardwood floors.
Application (Easy-to-Apply): To apply, first prep the unfinished surface by sanding at 220-600 grit. Apply a thin coat of Pure Tung Oil to the wood’s surface. Allow the wood to absorb (12-24 hours) and wipe away any excess. For deeper penetration you can thin Pure Tung Oil with a natural solvent and apply multiple coats for stronger finish.
Uses for Pure Tung Oil: Hardwood Floors, Kitchen Cabinets and Counters, Indoor and Outdoor Furniture.
POLYMERIZED TUNG OIL – The Faster-Curing, High-Performance Natural Finish
Brief Overview: Polymerized Tung Oil starts with the same ingredient as Pure Tung Oil: cold-pressed tung oil, extracted from the seeds of the tung tree (Vernicia fordii). The difference is what happens next. After pressing, the oil is gently heat-processed, which begins the natural polymerization process. Polymerization is the same molecular change that normally happens as tung oil cures on wood. In this case, part of that process is completed ahead of time using heat alone and without any chemicals, metallic driers, solvents, or additives. The result is a tung oil that dries significantly faster, more durable, and cures to a slight sheen, all while still remaining 100% natural, VOC-free, and safe for food contact. Walrus Oil’s Polymerized Tung Oil delivers the integrity of Pure Tung Oil with improved performance built in.
Faster Drying Time: One of the most meaningful advantages of Polymerized Tung Oil is its cure time. Because the oil has been partially pre-polymerized through heat before bottling, it cures significantly faster than Pure Tung Oil when applied to wood. Under ideal conditions, a thin coat of Polymerized Tung Oil is typically dry to the touch within 24 hours, making it far more practical for multi-coat finishing projects and tighter turnaround timelines. For furniture flippers, production woodworkers, and DIY renovators working through multiple pieces or larger surfaces, this faster cure time is a game-changer and all without sacrificing any of the natural, chemical-free qualities that make tung oil worth using in the first place.
Color and Sheen (Satin Finish): Polymerized Tung Oil produces a warm, satin finish to the wood. The finish is still completely natural-looking and far removed from the plastic shine of film-forming finishes like polyurethane.
Durability: Polymerized Tung Oil has an edge in durability over Pure Tung Oil. It cures to a harder, more resilient finish that stands stronger against daily wear and moisture, making it an excellent choice for dining tables, cabinetry, bar tops, kitchen countertops, and hardwood floors that see regular heavy use. It retains all of tung oil's renowned water resistance and adds an extra layer of surface toughness that's well-suited to high-traffic applications.
Application (pretty much the same): First prep the unfinished surface by sanding at 220-600 grit. Apply a thin coat of Polymerized Tung Oil to the wood’s surface. Allow the wood to absorb (12-24 hours) and wipe away any excess. For deeper penetration you can thin Polymerized Tung Oil with a natural solvent and apply multiple coats for stronger finish.
Uses for Polymerized Tung Oil: Hardwood floors, cabinets, bathroom vanities, outdoor picnic tables, Adirondack chairs, and more.
Conclusion
In summary, the choice between Polymerized Tung Oil and Pure Tung Oil comes down to your timeline, your project, and your finishing preferences. The key differences are cure time and appearance. Polymerized Tung Oil cures significantly faster and leaves a smooth satin finish, while Pure Tung Oil cures more slowly and produces a classic matte look. Both options offer long-lasting protection for indoor and outdoor wood projects. Both finishes offer durable protection for indoor and outdoor wood projects. Pure Tung Oil and Polymerized Tung Oil are available now from Walrus Oil.