Kleerband® Flange Protectors by APS


The quick, easy and effective way to protect flanges and prevent corrosion.

Kleerband brochure



Kleerband® Flange Protectors by Advance Products & Systems (APS) are designed to protect flange face, studs, and gaskets on raised face, full face, and ring joint flanges from atmospheric corrosion encountered in:

  • Chemical plants
  • Refineries
  • Gas plants
  • Offshore platforms
  • Onshore oil fields
  • Metering stations
  • Water and Wastewater plants
  • Pump stations
  • Underground pipelines.

Corrosion Control

Controlling corrosion and being aware of its damaging effects is paramount in pipeline maintenance. With the use of Kleerband® Flange Protectors and Kleergel® Corrosion Inhibitor, flanges remain safe from hazardous and unsightly corrosion that can cause leakage, failure, or even shutdown of equipment. The down time, coupled with the cost of cutting and welding a new flange, replacing flange bolts, nuts and seals, can become very expensive.

Kleerband® Flange Protectors are also designed for use on cathodically isolated flanges to prevent foreign matter from shorting out or bridging over an isolating gasket. All Kleerband® Flange Protectors are equipped with an exclusive positive loading relief vent and plug that assures complete loading of flange cavities. The extruded, clear, flexible polyband allows visual inspection without removal of the protector and ensures complete filling of the flange cavity.

Additionally, it's completely reusable and will provide many years of service life.


This installation video shows how easy Kleerbands are to install, and helps give you an idea of how the product will function in the real world.

Additional information

Pipe Diameter

1/2", 3/4", 1", 1 1/4", 1 1/2", 2", 2 1/2", 3", 3 1/2", 4", 5", 6", 8", 10", 12", 14", 16", 18", 20", 22", 24", 26", 30", 34", 36", 42", 44", 46", 48", 60"

ANSI Rating

150 lb., 300 lb., 400 lb., 600 lb., 900 lb., 1500 lb., 2500 lb.