What is Oracal 651?

[Aman]

Oracal 651 is a permanent adhesive vinyl, which is different from heat transfer vinyl. You do not need to use heat to apply 651 vinyl to any surfaces. ... Certain craft brands and hobbyists will say HTV, and others will say “iron-on,” but they are referring to the same product.
Made with clear, solvent-based, permanent adhesive Oracal 651 vinyl has a durability rating of up to six (6) years. A PERMANENT vinyl with a matte finish (durability rating of up to 6 years). Also known as “Outdoor” vinyl because it is water-resistant and will withstand exposure to the elements with great resilience. Due to its ability to adhere to a variety of surfaces, 651 is the perfect choice for making a wide range of custom decals and permanent stickers that can be used on car windows, mugs and bottles, kitchen labels and so much more. Compatible with most die-cutting machines: Cricut, Silhouette, Brother, and more! Urban Craft