"MATL NEOPRENE AND NATURAL RUBBER;HARDNESS 50-65 (SHORE ""A""); CIRCULAR SHAPE; INSIDE DIA 37.625 IN; OUTSIDE DIA 39.625 IN; CROSS-SECTIONAL DIMENSIONS-HEIGHT 10.500 IN,WIDTH 1.000 IN; 0.500 RADIUS TOP AND BOTTOM EDGE; WALL THICKNESS 0.468 IN; 4 NONCORROSIVE METAL INLETS MOLDED INTO MATERIAL 90 DEGREES APART 1.812 IN FROM EDGE; 0.500 IN NPT INTERNAL THREAD; USED ON MODEL 32VC1000 CLUTCH ABOARD USCG 378 FT VESSELS"