RTB324FR Phenolic Tube: High-Performance Flame Retardant & Low Moisture Absorption

Grade RTB324FR is constructed of a fine weave cotton fabric which has been bleached to remove impurities, and a modified phenolic resin with powdered PTFE added for lubrication as well as a flame retardant added. It has low moisture absorption and excellent dimensional stability and chemical resistance.

Properties

General

Property	Value	Testing Standard	Comment
Density	1.34 g/cm³	ASTM D792
Moisture absorption	0.82 %	ASTM D570	Condition D₁-24/23

Mechanical

Property	Value	Testing Standard	Comment
Compressive modulus	2.4 GPa	ASTM D695	Condition A
Compressive strength	180.6 MPa	ASTM D695	Condition A
Elastic modulus	3.4 GPa	ASTM D638	Condition A
Hardness, Rockwell M	100 [-]	ASTM D785
Tensile strength	60.7 MPa	ASTM D638	Condition A

Thermal

Property	Value	Comment
Relative temperature index, mechanical strength	140 °C	¹
Flammability	UL Bulletin 94, Class HB, Condition A

Electrical

Property	Value	Testing Standard	Comment
Dielectric strength	7.48 kV/mm	ASTM D149	Condition A

Technological properties

Property
Application areas	Typical uses include bearing retainers and parts that require excellent machining characteristics.
Fillers	Cotton Fabric and PTFE
Other	1.This temperature is a recommendation only, and based upon experience in various applications. The maximum operating temperature is dependent upon the application and should be investigated prior to use 2.The mechanical properties are converted from American unit system to International unit system.
Supplier Disclaimer	This data, while believed to be accurate and based on reliable analytical methods, is for informational purposes only. The terms and conditions of the agreement under which it is sold will govern any sales of this product. Data supplied above are "typical values"; not to be considered "specification values". To assure the material's performance is adequate for a specific application; customers should verify, independent of Norplex-Micarta, performance characteristics of interest. It is the responsibility of the users of this information to make sure that they have the latest version of this TDB, and are urged to check with Customer Service or, preferably our web site, www.norplex-micarta.com, to determine if the information is the most current available.

Densimet® D185ND Tungsten Heavy Alloy Rod – High-Density Precision Turned for Advanced Engineering Epoxy BT25NEE Tube – Premium Cotton‑Fabric Composite with Superior Moisture Resistance

Composite material