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This low adhesion sealant known as PR1428 has an extreme temperature service range to remain durable in even the most significant weather situations. Because of this quality, PR1428 is designed to be used as an access door sealant. PR1428 can sometimes be used as an ingredient for form-in-place gaskets. A two-part compound, PR1428 is used in an uncured state and then cures at room temperature to be used on any aircraft substrates.