Mechanical Seals

Style SMS1

Single Stationary Multiple Spring Cartridge with Circulation Gland

Part of Flex-A-Seal’s integrated/platform single cartridge seal design;
Patent pending Plunger-Lock drive;
Industries leading economical single stationary cartridge design;
Monolithic face w/ homogenous material;
Drive mechanisms out of product;
Springs are out of product, minimizes corrosion and stress related failure;
Unique shrouded rotary for maximum face protection and reliable startup;
Uniform 360 degree transfer of torque to rotating face;
Seal faces positioned in gland for maximum protection;
Dynamic elastomer moves on nonmetallic surface eliminating fretting;
Faces designed for optimum heat dissipation;
Sleeve is isolated from product;
Hydraulically balanced;
Easy cartridge installation;
Flush position maximizes face cooling;
Fits all standard and large bore ANSI pumps;
Metric sizes are available.

SMS3 with Circulation, Vent & Drain Gland

All the benefits of the SMS1 design plus vent and drain gland with throttle bushing
Pipe connections are made to different sizes to assure that correct piping plans are employed
Cost-effective “upgrade”

Operating Conditions

Max Temp - 400ºF (204ºC)
Max Pressure - 300 PSI (20 bar)
Max Speed - 6000 FPM (30 m/sec)

Note: Max Temperature / pressure / speed indicate operating extremes independently and do not imply the seal will function at these extremes at the same time. Contact Flex-A-Seal if in doubt.