company tower banner
Norplex-Micarta Company Logo

Norplex-Micarta RTB320X

RTB320X is composed of an extra-fine weave woven cotton fabric combined with a phenolic resin system to produce a tube product that has superior machining capability with smooth, fiber free surfaces. Typical uses include retainers for ball-bearings and applications that require fine machining characteristics. RTB320X also complies with MIL-I-24768/13, Type FBE, ASTM D709 Type II Grade LE and Federal Specification WW-L-2887 and IEC 61212-3-1 PF CC 21.

Polymer Name: Phenolic Compound

Reinforcement Material: Cotton

Physical Form: Tube

Density: 1290.0 - 1290.0 kg/m³

Features: Good Electrical Properties, Good Machinability, Smooth Surface Finish

  • TypeDocument Name
View All Documents

Knowde Enhanced TDS

Identification & Functionality

Chemical Family
Fillers Included
Polymer Name
Reinforcement Material

Features & Benefits

Applications & Uses

Markets
Plastics & Elastomers End Uses

Properties

Physical Form
Physical Properties
ValueUnitsTest Method / Conditions
Specific Gravity (0.75" ID x 1.00" OD)1.29ASTM D792
Rockwell Hardness (0.75" ID x 1.00" OD)100M ScaleASTM D785
Moisture Absorption (0.75" ID x 1.00" OD, Condition D1-24/23)1.2%ASTM D570
Acetone Extraction (0.75" ID x 1.00" OD, Condition A)max. 1.0%ASTM F2953-12
Tensile Strength (0.75" ID x 1.00" OD, Condition A)10000psiASTM D638
Compressive Strength (0.75" ID x 1.00" OD, Condition A)30000psiASTM D695
Compressive Modulus (0.75" ID x 1.00" OD, Condition A)425kpsiASTM D695
Thermal Properties
ValueUnitsTest Method / Conditions
Temperature Index (0.75" ID x 1.00" OD, Electrical / Mechanical)125/125°C
Flammability Rating (0.75" ID x 1.00" OD, Condition A)HBClassUL Bulletin 94
Electrical Properties
ValueUnitsTest Method / Conditions
Electric Strength (0.75" ID x 1.00" OD, Condition A)190Volts/milASTM D149

Regulatory & Compliance