A tire pressure sensor has been developed that includes a seal design with a built-in filter to protect internal sensor components from rim conditioners and other liquids present in most OTR tires. The innovative seal design with brass housing provides consistent valve core depression and temperature resistant seals. A high-performance Lithium-ion battery is also included for enhanced tolerance to temperature extremes and to provide reliable RF signal transmission for an extended period of time. The sensor also incorporates a high-impact nylon housing with a spin-welded cap and proprietary potting material, which encapsulates and protects the internal components from vibration, impact and extreme temperature changes. www.doranmfg.com