Measuring Gaskets by Gasketmaster

Hi, I’m Gasketmaster. I have discontinued my long silence in order to help my fellow gasket purchasers. I have taken a vow to help all of those in need of a gasket or any other sealing product with the assistance of Hennig Gasket and Seals. Hennig Gasket prides itself on delivering a gasket to the customer’s exact specifications. Customers should always be ready with the material specifications and the size. I have detailed below how to measure ring, full face, and a boiler gaskets. If the gasket you require is not a standard shape- don’t worry. Send a print or description, and Hennig Gasket will use its engineering expertise to make the gasket or part just right for you. Remember, if ever you are in desperate need of a gasket- Hennig Gasket and Seals and I- Gasketmaster- are there!

RING GASKET

The Ring Gasket is the possibly the most common shape of gasket. It is also the easiest to measure. Simply measure the diameter of the inside of the circle – also called and inside diameter or I.D. Then, measure the diameter the outside of the circle, also called the outside diameter- or O.D.
Dimensions needed to measure a Ring Gasket:
  • Inside Diameter (I.D.)
  • Outside Diameter (O.D.)





FULL FACE GASKET

A full face or bolt hole gasket consists of five measurements. First, measure the Inside Dimension (I.D.) and Outside Dimension (O.D.) just like you would a ring gasket. Then, count the number of Bolt holes and also measure the diameter of the bolt holes. The final dimension is the Bolt Circle. The bolt circle is most difficult and confusing dimension to measure and understand for most people. It doesn’t have to be. The Bolt Circle is the measurement from the center point of one of the bolt holes to the center point of the bolt hole directly opposite of it. An easier way to measure the bolt circle without having to eyeball the center of the bolt hole, is to measure from the left side of one bolt hole to the right side of the bolt hole directly opposite it.

Dimensions needed to measure a Full Face:
  • ID
  • OD
  • Number of Bolt Holes
  • Diameter of the Bolt Holes
  • Bolt Circle





BOILER GASKET- ELLIPTICAL

The most common shape for a boiler gasket is an ellipse. Elliptical boiler gaskets are called handway and manway gaskets for small and large gaskets respectively. When measuring an elliptical boiler gasket, you need four dimensions: the two inside diameters, the width and the thickness of the gasket. Usually, standard boiler gasket are made of ¼" rubber. The first inside dimension consists of the length from top to bottom of the inside of the gasket. The second inside dimension is the length from right to left on the inside of the gasket. There are other shapes for boiler gasket such as an oblong, a pear, or a round shape. If you have any questions on how to measure a particular gasket just ask a member of Hennig Gasket staff. Also, please feel free to stop in with a sample of the old gasket or send Hennig Gasket a sample through the mail.

Dimensions needed for an Elliptical Boiler Gasket:
  • First Inside Diameter (top to bottom)
  • Second Inside Diameter (left to right)
  • Width of Cross Section
  • Thickness of Material

 

Hennig Gasket & Seals Inc.
2350 West Cullerton Street
Chicago, Illinois 60608
Phone (312) 243-8270 / 1-800-747-7661
Fax (312) 243-7855 / 1-800-246-8955