Metal Seals – Metal O-Rings – V-Rings – C-Rings

The sealing capability of a metal seal is based on the high contact pressure along the sealing line and the elastic recovery of the metal material itself. At higher pressures, the sealing performance increases further. The sealing efficiency depends on the seal type, the material used, and the thickness of the material.

To achieve an even better seal, metal seals – such as O-rings, C-rings, and V-rings – are often coated or plated with materials such as silver, gold, nickel, tin, indium, PTFE, or Teflon.

Why use a Metal O-Ring – V-Ring – C-Ring?

• Temperature resistance up to 750°C
• Pressure range from 500 MPa to ultra-high vacuum
• Excellent resistance to corrosion and nuclear radiation
• Available in internal diameters from 5 mm to 7 meters

Wills Rings®

Wills Rings® O is a metallic O-ring used for sealing static flange joints. It provides a reliable seal for gases and liquids across a wide temperature range. The double-acting Wills Rings® O can withstand extremely high pressures and vacuum conditions, offering long service life and excellent corrosion resistance.

They are available in pressure-filled, solid, hollow, and system pressure-activated versions made of stainless steel, copper, or Inconel® 600. Rotating and reciprocating Wills Rings® can be plated with silver, nickel, or PTFE.

Wills Rings® operate in a temperature range up to 850°C and a pressure range up to 1,000 MPa (145,000 PSI). A wide variety of sizes and configurations is available.

Applications

Metal seals (O-rings, C-rings, V-rings, energised seals) are used in: vacuum and ultra-high vacuum systems, plastic moulding, hot runners, particle accelerators, research laboratories, reactors, nuclear installations, diesel and other engines, aerospace, petrochemical and oil & gas industries, hydraulics, valves, pumps, compressors, turbines, boilers, heat exchangers, the chemical industry, and the steel industry.

• Ideal where elastomer seals are limited by temperature, corrosion, radiation, pressure, gas permeability, or lifespan.
• Perfect for environments where rubber seals or standard O-rings cannot be used.

Metal O-Ring – Internal Pressure

Metal O-Ring – External Pressure

Metal C-Ring – Internal Pressure

Metal C-Ring – External Pressure

Metal V-Ring – Internal Pressure

Metal V-Ring – External Pressure

Metal C-Ring with Spring – Internal Pressure

Metal C-Ring with Spring – External Pressure

Find more information about seals here.
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