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- Rod Seals These are essential for preventing fluid leakage around the piston rod. Rod seals need to accommodate the rod's movement while withstanding wear and tear from friction.

- Chemical Processing Many chemical processes require high temperatures that can break down standard seals, necessitating specialized high temperature shaft seals to ensure containment and prevent leaks.

4. Outer Diameter The outer part of the seal fits snugly into the housing, preventing external contaminants from entering the system.