PACO Pump 91910715 Seal Kit 326058 756 and 407A series heaters operate and 407A series heaters operate within precise thermal parameters without the risk of thermal runaway Utilizing an ASCO valve repair kit reduces equipment downtime and maintains high pressure integrity in demanding industrial environments Durable Construction: High tensile stainless steel hardware and Buna N seals offer excellent resistance to standard water processing chemicals 75 inch Type 1A mechanical seal configuration features high grade Buna N elastomers paired with a Carbon Ceramic face set to ensure a leak proof interface under demanding hydraulic conditions