Expansion CV plugs seal holes in manifolds and castings. Single-piece assemblies range from 3 to 22 mm. Feature stainless steel, carbon steel, aluminum, brass, and other materials. Burst pressures to 40,000 psi. No threading or reaming required. Installation into as-drilled holes offers leak-tight seal without use of Locktite, pipe dope, or other sealants.

Farmington Engineering Inc., (203) 245-1100, www.farmingtoneng.com