Solid Back-up Rings and O Rings

O-rings made of PTFE are used in all applications in which the chemical resistance of conventional elasomer O-rings is not adequate. PTFE O-rings can only be used as static seals.

PTFE O-rings are manufactured by machining and can be produced in all sizes and can be ordered using a BS number.

Back up rings for use with a seal will always have a special part no. allocated by Moontown.

Back-up rings are used in combination with axial and radial seals when the extrusion gap is too big for the required pressure and temperature.

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Moontown Ltd | Manufacturers of Spring Energised PTFE and Metal Seals