White pine tar, also known as wood tar, is a thick, sticky, black liquid that is derived from the distillation of pine wood. It is commonly used as a preservative for wood, as a sealant for roofs, and as a waterproofing agent for boats and other marine vessels.
Common types of failures when rubber is exposed to white pine tar are swelling, cracking, and chemical degradation. Swelling occurs when the tar is absorbed by the rubber, causing it to increase in size and become softer. Cracking can occur if the tar is exposed to extreme temperatures, causing the rubber to become brittle and crack. Chemical degradation happens when the tar reacts with the rubber, causing it to break down and become brittle.
Viton ® o-rings from Marco Rubber offer excellent compatibility with a range of chemicals, oils and resist high temperatures up to 400F. Viton ® is also known as FKM made of fluoroelastomer one of the most versatile and widely used sealing materials.
View some of our other material compatibility ratings with WHITE PINE TAR. If you don't see what you're looking for or need more guidance, our team of experienced sealing design engineers can help select the best sealing products and material for your specific application.View Full Chemical Compatibility Guide