PRIMER STAIN BLOCKER SHELLAC Qt 946ML ZINSSER ™ is a specialized clear lacquer sealant used primarily to block stains and prepare surfaces for painting or finishing. This unit is designed to create an effective barrier that prevents stains from bleeding through subsequent layers, ensuring a cleaner and more durable finish. It holds a volume of 946ml, suitable for various surface preparation tasks in automotive and other refinishing projects.
This primer stain blocker is typically used after surface cleaning and before applying paint or topcoats. It is especially useful where wood stains, water marks, smoke damage, or other contaminants might otherwise show through. When considering this product, compare it with your old primer or stain blocker, paying attention to the coverage area and compatibility with your specific paint system.
The product falls under the category of Clear Lacquers / Sealant Spray. It serves to control stains effectively and primes surfaces to receive paint, supporting better adhesion and finish quality. Keep in mind this is a general preparatory product rather than a paint or coating itself.
- Capacity: 946ml (1 Quart)
- Type: Shellac-based stain blocker and primer
- Category: Clear Lacquers / Sealant Spray
If unsure about suitability or compatibility, you may want to contact the sales desk or submit a request for a part that matches your exact needs.
Need help matching this item to your vehicle? Use more Clear Lacquers / Sealant Spray, Vehicle Parts Finder or Request a Part with your VIN, engine number, part number or clear photos.

