JCM Industrial Fitting Typical Specifications 01 12 2024

Material Specification

JCM 406 Coated Service Saddle with Double Stainless Steel Straps

JCM Coated Saddles are constructed of ductile iron with a high density fusion plastic coating and have 18-8 Type 304 Stainless Steel straps, nuts and washers for high corrosion resistance.

Body Casting: Wrap around design of Ductile Iron, ASTM A-536 annealed to 60-40-18. Body has a gasket cavity, which provides internal as well as external gasket retention.


Nitrile Butadiene Rubber (NBR, Buna-N) per ASTM D2000. Molded virgin rubber with a pressure activated hydromechanical design. Gasket is bonded into a cavity for internal and external retention. Gasket temperature range -40 o F to 212 o F (-40 o C – 100 o C) Gasket suitable for water, salt solutions, mild acids, bases, and sewage.


EPDM gasket available.


Stainless steel, 18-8 Type 304, the straps are equal to or greater than the internal diameter of the gasket to provide for proper pipe support and gasket loading. Strap is 14 gauge stainless steel. Straps are passivated for corrosion resistance.


316 stainless steel available.

Bolts, Nuts, Washers : Stainless steel, 18-8 Type 304, passivated for corrosion resistance. Nuts coated with

Xylan antiseize compound to reduce friction and galling. Nominal Sizes 2” – 3” with 1/2” UNC roll thread, 1/2” stainless washers and heavy hex nuts, nominal sizes 4” and larger with 5/8” UNC roll thread, 5/8” stainl ess washers and heavy hex nuts.


316 stainless steel available.


Casting is coated with fusion bonded high density blue plastic, 12 mils minimum thickness, with a dielectric strength of over 12,000 volts. Water absorption less than .20% (less than nylon) prevents undercutting and blistering.

Pressure Rating:

Working pressure is 250 PSI hydrostatic. Contact factory if higher working pressure is required.


See catalog.

Information provided based on current data available. Contact JCM Industries Technical Services for modifications or changes.


Effective 04.25.14

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