TSE Industries Millathane® 28 Millable Polyester Polyurethane Rubber

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East Coast Precision Manufacturing - Vespel® Machining

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TSE Industries Millathane® 28 Millable Polyester Polyurethane Rubber (discontinued **)
Categories:	Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane, Elastomer, Unreinforced; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Millathane 28 has excellent resistance to gas (e.g., nitrogen) permeability as well as very good abrasion resistance and low temperature properties. This polyurethane rubber was designed for automotive applications such as shock absorbers, seals, gaskets, bushings, boots, and hoses. All information provided by TSE Industries
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Physical Properties	Original Value	Comments

Specific Gravity	1.19 g/cc
Mooney Viscosity	30 - 60 @Temperature 100 °C	ML(5+4), preliminary
Permeability	3.2e-8	Gas, N2; 80ºC, 345kPa; cm²/sec-atm; Formulation Example; Press Cure 7'/177ºC

Mechanical Properties	Original Value	Comments
Hardness, Shore A	62	Formulation Example; Press Cure 7'/177ºC
Tensile Strength	3960 psi	Formulation Example; Press Cure 7'/177ºC
	<= 4000 psi
Elongation at Break	446 %	Formulation Example; Press Cure 7'/177ºC
100% Modulus	0.319 ksi @Strain 100 %	Formulation Example; Press Cure 7'/177ºC
200% Modulus	0.769 ksi @Strain 200 %	Formulation Example; Press Cure 7'/177ºC
300% Modulus	1.93 ksi @Strain 300 %	Formulation Example; Press Cure 7'/177ºC
Resilience	40 - 45	percent
	44	Bashore Resilience (%)
Tear Strength	<= 22.6 kN/m	Die C; Formulation Example; Press Cure 7'/177ºC
	<= 35.0 kN/m
Compression Set	7.2 % @Temperature 80.0 °C, Time 79200 sec	Formulation Example; Press Cure 7'/177ºC

Processing Properties	Original Value	Comments
Cure Time	5.00 - 20.0 min	for compression molded lab sheets
Shelf Life	12.0 Month	under dry and cool conditions

Descriptive Properties
Abrasion Resistance	Very good
Appearance	Pale to light amber solid bale or milled sheets
DIN Abrasion (mm³)	77.4	Loss; Formulation Example; Press Cure 7'/177ºC
Formulation as Tested	0.3	Stearic Acid
	0.5	TAC
	1	Struktol WB222
	1	Low Melt Polyethylene
	100	Millathane 28
	20	N990 Black
	4	DBPH 50%
Odor	Faint, characteristic
Ozone Resistance	Excellent
Package Weight (lbs)	50

**
Materials flagged as discontinued () are no longer part of the manufacturer’s standard product line according to our latest information. These materials may be available by special order, in distribution inventory, or reinstated as an active product. Data sheets from materials that are no longer available remain in MatWeb to assist users in finding replacement materials.

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