In the oil and gas sector, equipment must survive some of the most hostile environments on Earth. High temperatures, corrosive chemicals, and immense pressures quickly destroy standard coil springs. To maintain constant sealing and structural integrity, the industry relies heavily on disc springs (also known as Belleville washers).

These conical-shaped rings pack immense force into tight spaces, making them critical for downhole, subsea, and surface equipment.

Why Disc Springs Beat Coil Springs in Heavy Industry:

Standard coil springs deform or lose tension under extreme oilfield conditions. Disc springs offer distinct advantages:

• High Force, Low Space: They generate massive clamping force with minimal axial deflection.
• Customisable Stack Configurations: Stacking them in series increases deflection, while stacking them in parallel increases force. Stacking in both combines both benefits.
• Damping Capabilities: Parallel stacking absorbs heavy shocks and dampens harsh vibrations from drilling operations.
• Predictable Performance: They maintain consistent force even during severe thermal expansion and contraction.

Exotic Materials for Harsh Environments

Standard carbon steel will fail rapidly in sour gas or subsea applications. Oil and gas disc springs rely on specialized metallurgy:

• Inconel (X-750 and 718): The industry standard for high-temperature and highly corrosive environments. They resist hydrogen embrittlement and sour gas (H₂S).
• Titanium Alloys: Selected for subsea applications where lightweight components and absolute saltwater corrosion resistance are vital.
• Phos Bronze / Nimonic: Used in specific downhole tools requiring non-magnetic properties or extreme creep resistance at temperatures exceeding 500°C.

Critical Oilfield Applications

• Valves and Actuators: Disc springs maintain a constant live-load on valve stem packings to prevent hazardous fluid or gas leaks.
• Downhole Drilling Tools: They absorb massive impact loads in drilling jars and shock tools, protecting sensitive electronics.
• Subsea Wellheads: They supply the permanent, high-tonnage clamping force required to hold subsea connectors secure against ocean currents and high pressure.
• Blowout Preventers (BOPs): They act as fail-safe energy storage units to mechanical close gates when hydraulic pressure fails.

Our Standard Carbon Steel Disc Springs to DIN 2093 are available to purchase online.