Trellex Morse Brass Marine Bearings All materials meet U.S. Navy specifications. MIL-B-178901A CLII These bearings are engineered to meet the toughest service requirements in corrosive and abrasive marine applications. And the fluted rubber bearing surface will outlast hard surface bearings by more than 10 times. They operate in any water-base liquid, most chemicals and petro products. Operating temperatures range from +39 to 158 F. Normal loading capacity up to 35 psi. Shaft is cushioned by continuous flow of 2 gals./in through the bearing.