Goodridge Adaptor -3JIC to M18 x 1.5 with Concave Seat
Goodridge aluminium adaptor JIC to Metric concave. 306-03-M18D. Aluminium adaptor -3JIC (3/8UNF) male to M18 x 1.5 male concave seat. Used when assembling oil systems with Goodridge 600 series unions and Goodridge 600-03 hose.