Quaternary Ammonium Compounds Quaternary ammonium compounds, also known as quats, are used as disinfectants in restaurants, hospitals and homes. They are also used as surfactants, fabric softeners, and antistatic agents in products like shampoo. 1127A 316 Stainless Steel O-Pro® Guard seal Abrasive resistant sealing option Capacities to 335 GPM 4127C 316 Stainless Steel High viscosity and abrasive resistant sealing options Capacities to 320 GPM