What is an O-ring Seal?
An O-ring seal is a circular elastomeric ring used as a secondary sealing element within a pusher-style mechanical seal design. The O-ring provides both static and dynamic sealing functions by maintaining contact between the seal faces and housing components to ensure a tight seal under various temperatures and pressure conditions. The pusher seal element allows axial movement to accommodate face wear and misalignment.
John Crane provides a wide selection of O-ring pusher seals, from cost-effective component designs to high-duty and API 682-qualified solutions, engineered for some of the industry’s most demanding applications.
What are O-ring Mechanical Seals Used For?
O-ring seals are versatile and widely used in industrial pumps, compressors and process systems across chemicals, water and wastewater, oil and gas, HVAC, and food and beverage. Their ability to manage moderately high pressures, combined with straightforward replacement and maintenance, makes them a dependable choice for both OEMs and maintenance teams.
