What type of sealer should be used on seams that might be exposed to automotive fluids?

What type of sealer should be used on seams that might be exposed to automotive fluids?

• A. heavy bodied
• B. light bodied
• C. flexible
• D. wax-based

Answer: (A)

Seams that may be exposed to automotive fluids need a sealant that builds up enough film, sticks well, and resists oils, fuels, and solvents without sagging. A heavy-bodied seam sealer provides that: its thicker consistency lets you fill larger gaps and stay in place on vertical or complex joints, curing into a durable, flexible film that stands up to fluids and temperature changes. Lighter or thinner sealers don’t develop enough film to prevent leaks and can run or shrink under exposure to oil and gasoline. Flexible sealers are suited for joints that move, but for areas likely to contact fluids, the extra build and fluid resistance of a heavy-bodied sealer make it the best choice. Wax-based products aren’t designed for sealing seams in fluid-rich environments and can degrade when exposed to oils and solvents.

Seams that may be exposed to automotive fluids need a sealant that builds up enough film, sticks well, and resists oils, fuels, and solvents without sagging. A heavy-bodied seam sealer provides that: its thicker consistency lets you fill larger gaps and stay in place on vertical or complex joints, curing into a durable, flexible film that stands up to fluids and temperature changes. Lighter or thinner sealers don’t develop enough film to prevent leaks and can run or shrink under exposure to oil and gasoline. Flexible sealers are suited for joints that move, but for areas likely to contact fluids, the extra build and fluid resistance of a heavy-bodied sealer make it the best choice. Wax-based products aren’t designed for sealing seams in fluid-rich environments and can degrade when exposed to oils and solvents.