Moeller Products Company, Inc. Lock out Dirt and Grime with Adjustable Oil Filler Caps, Fuel Tank Caps, and Universal Dipsticks Our products and services Oil Filler Caps Adjustable Fuel Tank Caps Universal Dipsticks Fabricated Tubing Lock-N-Seal TM Online Catalog You can always use the competitive edge in the manufacture of gas and diesel engines, transmissions, power steering and hydraulic ...