We are requesting to have the o-ring specialist for diesel hydrolic pumps so we prefer to send for us the prices fob and what is available with you and to be protected the high temprature and the system of your packing we hope to order as beginning around five thousands each peaces also if you deal with bolts for deisel try to send for us your catalouges I hope to receive your respond as soon as possible such Volvo trucks Mercedes and all Japanese trucks such as isuzu - Metsubishi - Hino - Fuso and etc all deisel parts rubbers and O-Rings.