The Blue-Max® manhole and handhole gaskets are engineered to provide all the durability, resilience, and sealing properties of an asbestos gasket, but without the asbestos. A Blue-Max® gasket is manufactured from a proprietary tacky cloth of glass, synthetic fibers, and brass wire, impregnated with a blue elastomer compound. The material is cut and formed to the desired size and shape, then coated with a proprietary Teflon material per MIL SPEC t-27730a. The finished gasket is easily installed, delivers trouble-free service, and does its part to reduce expensive boiler maintenance and downtime.

Why Blue-Max® is a Better Boiler Gasket

• Zero Leakage under Pressure.
  Even the slightest leakage is too much, as it increases maintenance and reduces boiler life. Tests by major boiler manufacturers confirm that Blue-Max® gaskets seal-with zero leakage-on steam to 450 psi and on cold-water hydro tests to 1500 psi. And Blue-Max® withstands working temperatures up to 500°F. Rubber gaskets simply can't take that kind of pressure and heat.
  
  
• Easily Removed.
  Blue-Max® gaskets will not stick to the plate after being in service. Removal is easy and requires no chiseling or buffing. This is important in reducing maintenance costs and boiler downtime.
  
  
• Sizes Clearly Marked.
  Each gasket is permanently and clearly marked with its size, so you'll know immediately that you have the appropriate one.
  
  
• Easy Problem-Free Installation.
  Blue-Max® gaskets offer installation advantages over other types. Because of the material's construction and strength, there is no danger of over-tightening the gasket and cutting it in half. A Blue-Max® gasket naturally lays flat on the flange, and requires no special installation tools, procedures, or training. Simply install the gasket and crank it down.
  
  
• Interchangeable Sizes.
  Corresponding obround and oval sizes are interchangeable, thanks to the unique properties of the material. It is not necessary to stock separate gaskets to accommodate slight size variations, and chances of dangerous mismatch are thereby reduced.
  
  
• Maximum Sealing in Rough Surfaces.
  Rough and pitted surfaces on old or poorly maintained flanges pose no problem for a Blue-Max® gasket. The material is resilient enough to conform perfectly to surface topography and maintain the tightest possible seal.
  
  
• Chemical-Resistant.
  The proprietary Teflon coating is resistant to the chemicals used in treating boiler water, so gasket life will be longer.
  
  
• Extended Shelf Life.
  A Blue-Max® gasket won't dry out or lose its strength while it sits on the shelf.

Installation Instructions

2. Install cover plate into opening, set crab/s, tighten nut/s finger tight while making sure the inside diameter of the gasket is centered evenly around the inside edge of the ring or shell.

    Note: If the cover plate is too small for the opening in the boiler, it's easy to place the cover off center. An off center plate will cause the same occurrence as previously described in the above note (2).

3. Tighten nut/s with wrench a full turn. When all gaskets are in place as previously described,  torque style #810-T handhole gasket sizes to 90-ft. lbs., and style #800-T manhole gasket sizes to 120-ft. lbs.

       Note: All plates with double crabs should be alternately tightened ( ie).: 40 / 80 / 120-ft. lbs.

4. Fill and fire boiler. Note: Should gaskets leak while filling boiler do not tighten nut/s. The soft rubber compound under the PTFE cures up with heat allowing the rubber to fill into the pits and irregular sealing surfaces. During this curing process it is not uncommon for leakage to occur.

5. Once the boiler has come up to operating temperature and pressure, allow the boiler to operate for four hours. After this period, retighten any leaking gaskets only enough to stop leakage.

6. Extra care should be taken when installing gaskets on the bottom of a boiler shell. Small particles of scale or sand tend to run down on the mating surface between the time the surface is cleaned and the cover plate is put in place ready to be torqued.

7. Blue-Max® boiler gaskets are sold and intended for use on steam boilers.

Performance data for the Blue-Max® boiler gaskets have been developed from field-testing, customer field reports and or in-house testing. While the utmost care has been used in compiling this information, we can assume no responsibility for errors.

Specifications subject to change without notice.

Blue-Max® is a registered trademark of O.G. Supply, Inc. for: gaskets for steam boilers, steam generators and water heaters in class 17(U.S. CL.35).

All rights reserved. .This installation information cancels all previous issues.

Subject to change without notice. BMBGII 01-22-0