JCM Industrial Fitting Typical Specifications 01 12 2024

Product Specification

JCM 105 Collar Leak Clamp For Pipe and Coupling Joints with a wall thickness greater than 5/32” and less than 5/16” All full circumferential single band repair clamps 2” (50mm) and larger shall have a minimum material standard of certifiable prime 304 Stainless Steel band; heavy duty, low profile Ductile Iron Lugs per ASTM A536 with mutually supporting sliding fingers; corrosion resistant alloy bolts, per ASTM A242, A193 B5, B7, and a Styrene-Butadiene Rubber (SBR) gridded gasket with tapered lap joint ends and a 304 stainless steel bridge plate molded flush into the gasket. Gaskets for sizes 3” and larger shall be 1/4” thick. Gaskets shall have an additional thickness of gasket on one end to accommodate a coupling wall thickness greater than 5/32” and less than 5/16”. To provide extra tightening capability, the band shall be permanently attached to the lugs by crimping the lug and locking it in place with a minimum of three stainless welds per lug.

This typical specification, provided by JCM Industries, is a proposed guideline for use by specifying agencies to ensure significant design and material features of this product are included within the agencies’ individual specifications.


Effective 01.10.2024

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