Saint-Gobain Performance Plastics Corporation

Jose R Sousa

Sarah Louise Clark

Karthik Vaideeswaran

Gary Charles Hildreth

Hamid Reza Ghalambor

Ceyhan Celik

Helina Joshi

Christophe Valdenaire

Jr Gary Charles Hildreth

A seal ring includes a weld and a thermoplastic material. The thermoplastic material has a weld elongation-at-break of at least 3%. The thermoplastic material can have a glass transition temperature of at least 100&#xb0; C. The thermoplastic material with the weld can have a weld elongation-at-break of at least 3%. The seal ring can have a circumference of at least 0.62 meters. The seal ring can have a coefficient of friction of not greater than 0.45.

Large diameter thermoplastic seal

A method of forming a seal ring includes heating an extruded rod to a temperature above a glass transition temperature. The extruded rod has first and second ends. The method further includes bending the extruded rod into a circular structure while the temperature is above the glass transition temperature, joining the first and second ends of the extruded rod to form a semi-finished ring, and annealing the semi-finished ring.

Method of forming large diameter thermoplastic seal

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East Providence, RI, United States of America

Jose R Sousa