Hello eveybody !
My terminal has two types of Loading Arms - FMC. I want to ask about material for flange Oring(connected between loading arm Flange and Ship)
-Loading Arm 1: To load Condensate/gasoline product; Oring material:PB701.
-Loading Arm 2: To load Butan/LPG product; Oring material: Hydrin 200.
The lifetime used PB701 is 6 months. However Oring Hydrin 200 is just only 2 months because it has decayed and peeled off. And last, I changed all them by Oring-Viton material but this situation is not improved!Please show me!
1. What is the best/suitable material for two type Loading arm?
2. Because of changing regime operation of them, What does I considerate when I use Loading arm for Butan product to load Condensate product?
Thank for yours answer!

If you don't get any response here, you might try www.eng-tips.com for this particular question

Gaskets are meant to wear especially when the flanges are regularly open & closed. Do you think the gasket materials are not suitable for the media being loaded because of too frequent replacements? Have you contacted the OEM for suggestions of better materials?

This message has been edited. Last edited by: Josh,