Brass compression limiter CL8100

for plastic parts

Metal Compression Limiters provide and maintain bolted joint integrity of a plastic assembly. Compression Limiters are designed to protect the plastic components of an assembly from the compressive loads generated when a bolt is tightened to its recommended tightening torque, thereby assuring that the joint remains intact throughout the life of the product. SPIROL offers a range of both formed and machined Compression Limiters including split seam, moulded in, oval and solid wall designs. Each type of Compression Limiter is designed to accommodate different compressive loads, positional tolerances and installation methods. All formed Compression Limiters, except the Series CL220, are zinc plated and have a supplementary coating of trivalent passivation and an organic sealant for corrosion resistance. This finish provides 144 hours to white corrosion, and 384 hours to red corrosion when salt spray tested in accordance with ASTM B117. SPIROL’s Series CL220 Compression Limiters are coated with ArmorGalv®, a zinc alloy thermal diffusion coating that provides a minimum of 1000 hours corrosion resistance to red rust. Machined Limiters are manufactured from aluminium and brass, both of which have inherent corrosion resistant properties and thus do not require supplementary finishing. The clearance between the bolt and the inside diameter of the installed Compression Limiter is adequate to meet normal misalignment. The Compression Limiter’s length should be designed to ensure it will bottom out against the surface under the bolt’s head and mating component. The appropriate length and length tolerance is application dependent.