Flanges & Fittings

All Sealum part numbers start with four digits. This set of numbers is considered to be the series number. The series number identifies the style of the part and its function. Each series of flange or adapter will come in a variety of sizes. To identify the different sizes, Sealum uses a two-digit number equal to the size in inches multiplied by sixteen. For example, 1.50" x 16 = 24. This two-digit number is called a dash number. The majority of flanges and adapters have two or more sides to them, therefore two or more dash numbers. The order in which the dash numbers follow the series number is extremely important. This is especially true in a fitting with jump sizes. The series number together with the dash numbers will now become the part number. On fittings with two different types of ports, there are some rules that tell us which port comes first and which comes second. The following list will show which ports take precedence over the next. Generally, the higher up on the list, the farther to the end of the part number it goes. Male threads are always higher up on the list than female threads.

C61SAE J518C Code 61

C62SAE J518C Code 62

ORFO-Ring Face

ORHO-Ring Head

CompCompanion Face

ORBO-Ring Boss

NPTNational Pipe Thread

JICJoint Industrial Council

BSPPBritish Standard Pipe thread – Parallel

BSPTBritish Standard Pipe thread – Tapered

ORFSO-Ring Face Seal

SWPSocket Weld Pipe

BWPButt Weld Pipe

SWTSocket Weld Tube

ORFJO-Ring Flex Joint

On fittings with more than two ports, such as tees and crosses, the order in which the dash numbers fall will always start at the left side of the block and go in a counterclockwise direction. The preceding list has no bearing on the order in which dash numbers fall when it comes to tees and crosses.

Bolt Kits

With the exception of Sandwich style flanges, all Sealum O-Ring Face flanges come standard with Imperial grade 8 bolt kits. Metric bolt kits are available upon request and must be specified in the part number by adding a "M" to the end of the part number, for example 1203-16-16M. For bolt sizes and torque specifications see page 41-12 of the Sealum catalog.

Material Grades

Sealum flanges and adapters are manufactured from C1018 & G40.21-44W steel, 316 Stainless Steel as well as 6061-T6 Aluminum are also available upon special request. To specify stainless steel, add "SS" to the end of the part number. For example 1203-16-16SS. To specify aluminum, add an "A"" to the end of the part number. For example 1203-16-16A.

Plating

In some instances it is preferred to have your flanges and adapters yellow zinc plated or black oxidized. For yellow zinc plating add "ZY" after the series number. For example 1203ZY-16-16. For black oxide coating add "XB" after the series number. For example 1203XB-16-16.

Pressure Rating

While Code 61 flanges are sometimes referred to as "3000 psi flanges" the actual pressure rating varies between 500 psi and 5000 psi depending on the size of flange. Code 62 flanges are all rated for 6000 psi regardless of the size of flange. For the actual pressure ratings and specifications refer to page 41-12 of the Sealum catalog.