Polypropylene cam and groove couplings are manufactured from a glass filled polypropylene compound and are designed for use in low to medium pressure applications (1-1/4 in through 2 in have a maximum 125 psi and 3 in through 4 in have a maximum 90 psi at 70 deg F). They come standard with stainless locking arms, stainless pins and EPDM gaskets, which makes them ideal for transferring diluted chemical solutions.