Ingersoll Rand 450 HP MPV O-Ring Replacement - V75-253

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Ingersoll Rand MPV O-Ring V75-253 O-ring V75-253 is the sealing ring for the minimum pressure valve on Ingersoll Rand 450 HP rotary screw air compressors. It seals the valve body a gainst its mating surface so the MPV can hold separator tank backpressure without leaking past the joint. Because the MPV o-ring sits in a hot, oil-wetted, pressure-cycled location, it hardens and takes a set over time. Any time the minimum pressure valve is opened for inspection or rebuild, the o-ring should be replaced rather than reused, since a weeping seal at this point shows up as oil carryover or a tank that will not hold pressure. Browse more o-rings and seals or related check valves. Show more