White-Max® Handhole Gaskets

Gaskets

White-Max® Handhole Gaskets

Home
/
All Boiler Part Categories
/
White-Max® Handhole Gaskets

White-Max® Handhole Gaskets

Engineered White-Max® handhole gaskets provide a precise, durable seal for demanding high-temperature water tracking lines.

We have a full inventory of OEM-compatible White-Max® Gaskets at all sizes and horsepower requirements.

Part # | Diameter | Model | HP Range

ET306-732
3 x 5 x 9/16 inch
E
ET306-946
3 x 5 x 9/16 inch
OB

ET306-733
3 x 5 x 9/16 x 1/4 inch
E

ET306-948
3 x 5 x 9/16 x 1/4 x 1/4 inch
OB

ET306-725
3 x 4 x 5/8 inch
E

ET306-727
3 x 4 x 5/8 x 1/4 inch
E

ET306-973
4 x 5 x 5/8 inch
E

ET306-749
4 x 5 x 5/8 x 1/4 inch
E

ET306-974
4 x 6 x 5/8 inch
E

ET306-972
4 x 6 x 3/4 inch
E

ET306-724
3 x 4 x 1/2 inch
E
ET306-928
3 x 4 x 1/2 inch
OB

ET306-723
3 x 4 x 1/2 x 1/4 inch
E

ET306-971
4 x 6 x 1/2 inch
E

ET306-736
3-1/4 x 4-1/2 x 1/2 inch
E
ET306-932
3-1/4 x 4-1/2 x 1/2 inch
OB

ET306-735
3-1/4 x 4-1/2 x 9/16 inch
E
ET306-935
3-1/4 x 4-1/2 x 9/16 inch
OB

ET306-734
3-1/4 x 4-1/2 x 9/16 x 1/4 inch
E
ET306-947
3-1/4 x 4-1/2 x 9/16 x 1/4 inch
OB

ET306-737
3-1/4 x 4-1/2 x 5/8 inch
E

ET306-739
3-1/4 x 5 x 9/16 inch
E
ET306-946
3-1/4 x 5 x 9/16 inch
OB

ET306-740
3-1/4 x 5 x 9/16 x 1/4 inch
E

ET306-743
3-1/4 x 5 x 5/8 inch
E

ET306-910
3-1/4 x 4-1/4 x 1/2 inch
OB

ET306-747
3-1/2 x 4-1/2 x 1/2 inch
E
ET306-949
3-1/2 x 4-1/2 x 1/2 inch
OB

ET306-746
3-1/2 x 4-1/2 x 1/2 x 1/4 inch
E

ET306-748
3-1/2 x 4-1/2 x 5/8 inch
E

ET306-930
3 x 4-1/2 x 9/16 inch
OB

ET306-950
3-1/2 x 4-1/2 x 9/16 inch
OB

In-stock items. Order by 2:00 PM EST for Same-Day Shipping.

Order now (502) 459-9131 Get a Quote

Frequently Asked Questions About White-Max® Gaskets

What is a White-Max® gasket and what is its primary function?

A White-Max® gasket is an advanced, high-performance refractory sealing component engineered specifically to provide superior thermal resistance and a precise, durable seal. Its primary function is to secure critical sealing boundaries across modern boiler environments, particularly along high-temperature water tracking lines. Constructed from specialized PTFE-based or synthetic composite materials, these gaskets prevent fluid leakages and stand up to demanding process pressures without material breakdown.

What makes White-Max® gaskets ideal for high-temperature water tracking lines?

Modern boiler systems utilizing intensive chemical water treatments and rapid thermal cycling require gaskets that will not degrade or leach contaminants into the fluid stream. White-Max® gaskets are preferred because they combine extreme chemical inertness with excellent resistance to thermal deformation. When compressed within handhole or manway frames, the specialized composite construction creates an enduring, fluid-tight seal that isolates the metal seating surface, stopping localized steam cuts and tracking leaks before they cause major casing damage.

Why should facility procurement managers source White-Max® gaskets from Halmar?

Ordering specialized premium gaskets through traditional factory original equipment manufacturer (OEM) channels often subjects operations to extended distributor lead times and highly inflated price markups. Halmar serves as a responsive, domestic alternative, maintaining deep, ready-to-ship inventory pools of premium aftermarket boiler parts right on our warehouse shelves in Louisville, Kentucky. Our technical team accurately cross-references your system specs and dimensions, providing fast answers and immediate same-day shipping to keep your turnaround projects moving on time.

Didn’t find your answer? Ask us!

Gaskets

White-Max® Handhole Gaskets

White-Max® Handhole Gaskets

Need help finding the right gasket?

Frequently Asked Questions About White-Max® Gaskets

What is a White-Max® gasket and what is its primary function?

What makes White-Max® gaskets ideal for high-temperature water tracking lines?

Why should facility procurement managers source White-Max® gaskets from Halmar?

Archives

Categories

Pages

Categories

Archive