Penetrating Lubricant, Blaster, PB Blaster, Net Fill 1 gal, Container Size 1 gal, Can, Petroleum Distillates, Min. Operating Temp. 20 Degrees F, Max. Operating Temp. 120 Degrees F, Not Rated NSF Rating, Yes 50 State VOC Compliant, 43 Percent VOC Content, Colorless, Odorless No, Flammable, Flammable Liquid (Category 3), Flash Point 155 Degrees F, -, USDA Certified Biobased Product No Penetrating lubricants loosen fasteners or bolts that are stuck or frozen in place so they can be removed or separated. These liquids seep into crevices or small spaces between threaded parts to release them. They can displace moisture and prevent corrosion between fasteners. Penetrating lubricants evaporate more quickly than other lubricants, so they are better used for short-term lubrication.