The new seal design was developed by engineers at the Parker Tube Fittings Division and is a principal design feature of the Parker Seal-Lok Xtreme line of flat face seal fittings. This innovative metal seal is used in place of elastomeric O-rings in traditional O-ring face seal fittings (ORFS) that cannot meet the high- and low-temperature or chemical compatibility requirements of certain applications.The patent describes an “Extreme Temperature Device for Flat Face Seal Fitting.” The unique trap-style seal has three retainers (clips) that extend into the existing fitting’s O-ring groove, preventing the seal from falling out during assembly or reassembly. “We saw a need for the benefits of ORFS fittings in applications where the thermal and chemical compatibility properties of elastomeric O-rings were limiting factors,” said Burleigh Bailey, patent co-author and Parker Senior Project Engineer.
“These metal seals can be used in applications from -328°F to +1200°F (-200°C to +650°C) while elastomeric O-ring seals are limited to a temperature range of -65°F to +450°F (-54°C to +232°C).”
Parker’s patented innovation of this new metal sealing ring now offers the advantages of ORFS fittings (zero clearance, vibration tolerance, ease of assembly and reassembly) and provides a complete solution for demanding applications such as combustion turbines, liquid natural gas (LNG) storage and fueling systems, cryogenic equipment, high-temperature engine compartments, instrument panels and chemical process equipment.
Seal-Lok Xtreme fittings are highly vibration resistant and compatible with working pressures greater than 5,000 psi (350 bar) depending on the fitting size. Parker also offers a patented SAE J1926-compliant port end seal, referred to as SAE metal seal, for its Seal-Lok Xtreme product line
Visit www.parker.com/tfd learn more about how Seal-Lok technology can enhance your application.