How to Choose Between Sweet Rubber Gasket and PTFE Manlid Seal

Advantages of Sweet Rubber Gasket: Excellent flexibility and initial sealing, easier installation.

Cost-effective, the most economical choice for general non-corrosive goods.

Ideal for food and pharmaceutical applications (using food-grade certified EPDM).

Advantages of PTFE Manlid Seal: Unparalleled chemical resistance, the ideal choice for corrosive goods.

Extremely wide operating temperature range, suitable for extreme conditions.

High purity, no contamination, suitable for products with extremely high purity requirements.

How to Choose: The choice of gasket depends entirely on "cargo compatibility".

For transporting food, pharmaceuticals, and mild chemicals ("Sweet" Cargo): Sweet Rubber (EPDM) is the preferred choice. Its low cost and excellent sealing performance fully meet the requirements, making it the most cost-effective solution.

For transporting corrosive chemicals (such as concentrated sulfuric acid, caustic soda, halogens, organic solvents, etc.): PTFE Seal must be used. EPDM rubber deteriorates rapidly in such shipments, leading to leaks.

For transporting high-purity or high-value chemicals, and where both are compatible:

PTFE is an option if the budget allows and absolute safety and pollution-free assurance are paramount.

Proven food-grade EPDM is also perfectly feasible if cost is a consideration.