EPDM is the standard elastomer on many pumps and valves and is not compatible with petroleum-based products. Using lubricants such as the popular Petro-Gel in these applications is not a good choice as it will degrade your equipment elastomers and decrease the life of your parts.
Due to the high melting point, Petro-Gel and similar non-CIP lubricants have the potential to contaminate your product with bacteria such as Listeria. Petro-Gel has a melting point of 190°F, and typical CIP cycles are only 160-180°F, meaning the residue will not melt and clean away. If a spare part somehow came in contact with bacteria, the high melting point of these non-CIP lubricants would function to protect the bacteria during the CIP cycle and could contaminate your products!