Polyethylene glycol (PEG) is a synthetic polymer used in a variety of industries, including cosmetics, pharmaceuticals, and food processing. Common applications include thickening agents, emulsifiers, and drug delivery systems.
Common types of failures when rubber is exposed to polyethylene glycol include swelling, softening, and disintegration. The molecules of PEG can interact with the molecules of the rubber, causing it to swell and become softer. Over time, the rubber may become brittle and start to crack and disintegrate. Additionally, the PEG molecules can also leach into the rubber, reducing its flexibility and weakening its performance.
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 POLYETHYLENE GLYCOL. 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