APPLICATION EXAMPLE: D-SEAL FOR CYLINDER LINER
Engine vibrations can cause contact to vary between rounded O-Ring sealing surfaces and the housing, creating a ‘pumping’ effect and allowing fluid to bypass the seal.
Gases contained in this media can expand rapidly when pressure conditions change, causing cavitation damage and leading to failure. Replacing the O-Ring with a D-Seal maintains leak-tight contact throughout operation, stopping cavitation damage entirely and improving overall engine longevity.
Materials: EPDM and FKM
Application area: Heavy diesel engine
Advantages: Excellent sealing – Damps vibrations – Prevents cavitation damage

Pressure: |
2 to 5 bar |
Movement: |
Static |
Media: |
Oil, cooling water |
Temperature: |
Cooling water (+110 °C) and oil (+120 °C) |
Dimensions: |
inner diameter: 120 – 160 mm, cross-section: 3 – 7mm |
Materials: |
E7T41 (EPDM) for cooling side and V7T40 (FKM) for oil side, |