Profile: Monarch-McLaren Ltd. provides leather seals and packings. Our brands include Clayton Mark™, C F Adams™, Hercules™ and E.F. Houghton™. Our products include flange packings, vee packings, U-packings, cup packings, back-up washers and well cup packings. Our flange packings are ideally suited for preventing the passage of foreign material along shafts or piston rods. Our vee packings are well suited for efficient hydraulic or pneumatic piston head packing. Our cup packings are ideally suited for hoists, presses, air engines and hand pumps.