The purpose of this standard is to provide the missile hydraulic and pneumatic component designerwith information learned, tested and substantiated in correction of problems and failures experiencedwith seals that are subject to the unique requirements of missile static storage and subsequent dynamic operational conditions.Missile hydraulic and pneumatic component designers have been handicapped by the absence ofconcise design criteria for two difficult sealing conditions usually existing in missile applications as follows:• Static pressure condition - Low pressure for long periods in a cyclic temperature environment (i.e.,long term storage requirements).• Dynamic pressure condition - High pressures suddenly applied in an extreme temperatureenvironment (i.e., operational firing requirement).Each of the two conditions listed above are frequently required to be satisfied by a single seal in a missile hydraulic or pneumatic component with sealing requirements changing abruptly from the first to the second set of conditions.This design standard is intended to facilitate more nearly optimum designs by presenting specificrecommendations in the areas of materials, finishes, configurations and inspection criteria that pastexperiences show to be desirable and prudent.