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title: What are typical Polytetrafluoroethylene (PTFE) thicknesses? For dimpled PTFE, can you change the dimple size and spacing?
description: D.S. Brown can efficiently design, manufacture and test Versiflex™ high-load multi-rotational (Versiflex™ HLMR) pot and disc style, spherical and elastomeric bearing assemblies for all types of construction.
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# What are typical Polytetrafluoroethylene (PTFE) thicknesses? For dimpled PTFE, can you change the dimple size and spacing?
## D.S. Brown can efficiently design, manufacture and test Versiflex™ high-load multi-rotational (Versiflex™ HLMR) pot and disc style, spherical and elastomeric bearing assemblies for all types of construction.
**Answer:** Typical bearing PTFE thickness is 1/8”, 3/16” and ¼” and should follow the recommendations of AASHTO LRFD section 14. For dimpled PTFE, the minimum thickness is 3/16” to comply with AASHTO. Dimple size and spacing on the PTFE can be modified as required, but shall follow the recommendations of AASHTO. D.S. Brown typically maintains ½” clearance between the dimple and edge of PTFE, and spaces dimples accordingly to provide 20-30% coverage.
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