Gravel Guard is applied as an anti-gravel and anti-corrosion protection coating on bumpers, fenders, rocker panels, chassis of cars, trucks, and coaches. TK38 is an over paint-able anti-gravel coating with anti-corrosion and sound-deadening properties based on rubber and resins. After drying, the coating is over paint-able with all conventional paint systems. After the product has completely dried it remains a durable elastic film offering excellent protection against rust, corrosion, and abrasion. The coating may not be stored under +10°C / 50°F and above +30°C / 85°F. The packaging must be protected from direct sunlight and heat. When stored in a cool, dry and well ventilated area, the product has a shelf life of 2 years in unopened, original packaging.