• Heavy-Duty Drive: The seal utilizes a heavy-duty compression ring and drive pins to handle high torque loads and viscosity changes.

• Multi-Spring Even Loading: Multiple coil springs provide uniform face loading, ensuring the PTFE wedge seats correctly even under thermal cycling.

Model NO.: Type 21

Specification: 1'',1 1/4'',1 3/8'',1 5/8'',1 3/4'',1 7/8'',2 1/8'

Temperature: high temperature mechanical seal

Balance: Unbalanced

Type: Multi-Spring

Accreditation: ISO, SGS, UL, ROHS

Service: OEM/ODM

Origin: China

• Pumping Ring Efficiency: Features a high-flow internal pumping ring to circulate barrier fluid aggressively, removing heat generated by the seal faces.

• Tangential Ports: Gland ports are drilled tangentially to minimize flow resistance and maximize cooling efficiency.

• Metal Bellows Option: While ISC2 is often a pusher seal, we also offer a metal bellows version for pools using ozone or high-temperature heating, eliminating O-ring hang-up.

• Universal Fit: The gland plate slots allow it to fit a wide variety of large split-case or end-suction pumps found in aquatic centers.

• Cooler Integration: Includes connection ports for API Plan 23, which circulates fluid from the seal chamber through a heat exchanger and back, keeping the faces cool despite high process temps.

• Pumping Ring: An integrated pumping ring drives this cooling circulation loop efficiently.

• Distributed Flush: Multi-port flush injection ensures uniform cooling of the seal faces (API Plan 11), preventing hot spots and coking.

• Heavy Duty Faces: Uses thick-section seal faces to resist thermal distortion under pressure.

• Self-Adjusting: The single coil spring and O-ring mount allow the seal to adjust automatically to shaft end-play and runout.

• Field Repairable: The modular component design allows for easy replacement of faces or elastomers if the metal parts are still serviceable.