Parker has managed to equip O-ring seals with RFID chips. RFID allows contactless access to information stored on an RFID transponder. The RFID transponders used, which are activated and read by a corres- ponding reader, do not require their own power supply. The size of the RFID chip is in the range of around 1 mm. As a result, the chips can be effectively implemented in sealing solutions such as O-rings with a cord thickness of more than 3.5 mm.
The RFID chip is vulcanised into the O-ring using a specially developed manufacturing process. It allows the position of the RFID transponder to be accurately checked to ensure that it is centred within the O-ring’s cross-section. RFID technology can be integrated into all standard sealing compounds. The O-rings thus equipped can be used in a wide range of media and temperatures with only marginal influences on the performance capability of the sealing element such as compression set or behaviour in the application medium, as laboratory tests have confirmed.
The RFID chips are suitable for customer-specific programming and can be read from a distance of several metres. To enable accurate identification of every single O-ring equipped with an RFID transponder each RFID chip has a unique identification number. This identification number is read and can be linked with specific information via the tracking system.
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