The Furon® Gauge Protector isolates metal gauge or pressure transducers from potentially damaging media, protecting downstream plumbing and equipment. The Gauge Protector's PTFE diaphragm isolates media fluid from filler fluid. IPA/DI water, glycerin, or other isolation fluid can be used as filler fluid. The Double Diaphragm Gauge Protector offers dual containment protection against potential contamination, shielding high temperature media from filler fluid. Its leak detection port can be used to purge and isolate highly permeable chemical media from filler fluid and gauge.