The S23 series of M12 Connector cables are straight plug 4 pin with options of PVC and PUR (Polyurethane, halogen free) cable jackets.
PVC cables are well suited to applications for assembly and production with simple mechanical stresses. They are also resistant to acids and alkali chemicals.
PUR cables are well suited to applications requiring small bend radius or are exposed to chemicals such as oils as well as heat. They are also more resistant to abrasion.