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Norplex-Micarta RTB320H

Being a heat treated version of RTB320, RTB320H has low moisture absorption and excellent dimensional stability. Typical uses include retainers for ball-bearings and applications that require fine machining characteristics. RTB320H also complies with MIL-I-24768/13, Type FBE, ASTM D709 Type II Grade LE and with IEC 61212-3-1 PF CC 21.

Polymer Name: Phenolic Compound

Reinforcement Material: Cotton

Physical Form: Tube

Density: 1310.0 - 1310.0 kg/m³

Features: Bearing Grade, Dimensional Stability, Good Machinability, Heat Treated, Low Moisture Absorption

Technical Data SheetSafety Data Sheet

Enhanced TDS

Knowde-enriched technical product data sheet

Identification & Functionality

Chemical Family
Phenols & Phenolics
Fillers Included
Cotton,
Natural Fiber
Polymer Name
Phenolic Compound
Reinforcement Material
Cotton
Technologies
Composite Materials,
Plastics
Product Families
Composite Materials — Parts & Shapes
Plastics — Parts, Shapes & Films

Features & Benefits

Materials Features
Bearing Grade,
Dimensional Stability,
Good Machinability,
Heat Treated,
Low Moisture Absorption

Applications & Uses

Markets
Automotive & Transportation,
Industrial
Applications
Automotive & Transportation — Automotive
Chassis & Brake
Industrial — Chemical & Industrial Manufacturing
Equipment & Parts
Composites End Use
Gaskets,
Wheels
Plastics & Elastomers End Uses
Bearings,
O Rings,
Thrust Washer

Properties

Physical Form
Tube
Physical Properties
ValueUnitsTest Method / Conditions
Specific Gravity (0.75" ID x 1.00" OD)1.31-ASTM D792
Rockwell Hardness (0.75" ID x 1.00" OD)105M ScaleASTM D785
Moisture Absorption (0.75" ID x 1.00" OD, Condition D1-24/23)1.1%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)9800psiASTM D638
Compressive Strength (0.75" ID x 1.00" OD, Condition A)31000psiASTM D695
Compressive Modulus (0.75" ID x 1.00" OD, Condition A)400kpsiASTM D695
Thermal Properties
ValueUnitsTest Method / Conditions
Temperature Index (0.75" ID x 1.00" OD, Electrical / Mechanical)135/135°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)275Volts/milASTM D149

Regulatory & Compliance

Quality Standards
ASTM F2953-12,
IEC PF CC 21,
MIL-I-24768/13 Type FBE,
NEMA LE