Garlock PS-SEAL® Back to Back

Dual-lip seal for enhanced safety

The Back to Back configuration of the PS-SEAL® is designed for applications requiring double sealing—such as when handling different media or when maximum leak protection is needed. Two sealing lips are positioned in opposite directions, forming a robust barrier against leakage.

Features:

• Pressure resistance up to 25 bar

• Flexible sizing based on standard dimensions

• Customizable lip materials and housing

• Ideal for separating media or added safety

Applications: Chemical processing, pharmaceutical systems, vacuum applications

Material options sealing lips:

GYLON® BLACK (Graphite)
Standard material for lubricated applications.
✔ Excellent for lubricated conditions
✔ Low friction and high wear resistanc
✔ Good chemical resistance
✘ Not FDA-compliant

GYLON® WHITE (Barium Sulfate)
Designed for food, pharmaceutical, and beverage industries.
✔ FDA and EN1935 compliant
✔ Suitable for food, pharma, and beverage applications
✔ Partially suitable for dry running

GYLON® BLUE (Glass Microspheres)
Highly flexible material with outstanding dry running performance.
✔ FDA and EN1935 compliant
✔ Very flexible (high recovery capacity)
✔ Best choice for dry running
✔ Ideal when shaft roundness is poor

GYLON® BROWN-WHITE (Style 3549)
For abrasive applications in food and pharmaceutical sectors.
✔ High wear resistance in abrasive media
✔ Suitable for food and pharma
✔ FDA-compliant

F (Econol)
For high-speed, dry running, and gas-tight applications.
✔ FDA and EN1935 compliant
✔ Excellent dry running characteristics
✔ Ideal for vacuum applications
✔ Best choice for high speeds and gas sealing

MS (Molybdenum Disulfide)
For use with abrasive media.
✔ Suitable for abrasive conditions
✔ Enhanced wear resistance

KF (Carbon Fiber)
For partially abrasive media and dry running.
✔ Good dry running performance
✔ Suitable for semi-abrasive applications