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The 663 type seal is an asymmetric, single lip U-ring rod seal designed to provide a dry sealing solution in light and medium-duty applications and manufactured in Hythane 181, Hallite's high-performance polyurethane, for easy installation and excellent low temperature performance. The seal can be considered for use in heavy-duty applications when used with a suitable full depth back-up ring. The seal is a single lip modification of the well-established 605 profile and is ideal for applications that require a double-lipped wiper. The 663 is also offered in other high quality Hythane materials to best fit the needs of the application.
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