Polyethylene Polypropylene FlexTemp
Properties* Low Density High Density Impact
(rubber-modified)
Thermoplastic Rubber
MECHANICAL CHARACTERISTICS
Specific gravity (density) 0.910-0.925 0.941-0.965 0.890-0.91 .940-.960
Tensile strength, p.s.i. 600-2300 3100-5500 2800-4400 2400-3100
Elongation, % 90.0-800.0 20.0-1000.0 350.0->500.0 500-620
Compressive strength, p.s.i. - 2700-3600 4000-6500 -
Tear strength (ASTM D1004) - - - -
Impact strength, ft. lb./in. of notch (1/2x1/2 in. notched bar, izod test) No break 0.5-20.0 1.0-15.0 @ 73°F -
Hardness, Rockwell D41-D46
(Shore) R10
D60-70
(Shore)
R50-R85 -

ELECTRICAL CHARACTERISTICS
Volume resistivity, ohm/cm3
(50% RH and 23°C.)
>10^16 >10^16 >10^15 -
Dielectric constant, 60 cyc. 2.25-2.35 2.30-2.35 2.3 -
Dissipation (power)factor, 60 cyc. <0.0005 <0.0005 >0.0003 -

SERVICE TEMPERATURES
Continuous °C/°F 66/150 74/165 121/250 132/275
Intermittent °C/°F 79/175 102/215 - 149/300
Brittleness °C/°F <-70/<-94 -18/0 <-70/<-94 0

RESISTANCE CHARACTERISTICS
Water absorp., 24 hr., 1/8” thick,% <0.015 <0.01 <0.01 <.10
Burning rate (flammability), in./min. Very slow
(1.04)
Very slow
(1.00-1.04)
Slow Slow
Effect of sunlight Unprotected material crazes rapidly.Requires black for complete protection. -
Effect of weak acids Resistant Very Resistant Completely Resistant Very Resistant
Effect of strong acids Attacked by oxidizing acids Attacked slowly by oxidizing acids Resistant to oxidising acids -
Effect of weak alkalies Resistant Very Resistant Completely Resistant Very Resistant
Effect of strong alkalies Resistant Very Resistant Very Resistant Very Resistant
Effect of organic solvents Resistant
(below 60°C)
Resistant
(below 80°C)
Attacked by hydrocarbons and chlorinated hydrocarbons Swells in contact with Hydrocarbons and Chlorinated hydrocarbons
Machine qualities Good Excellent Good Fair
Clarity (Natural Material) Translucent to opaque Translucent to opaque Translucent Opaque
Abrasion resistance - - - -



Silicone Rubber Vinyl Flex500PLUS Static Conductive
MECHANICAL CHARACTERISTICS
Specific gravity (density) 1.18 1.2 1.35 1.06
Tensile strength, p.s.i. 200-1500 2300 2000 1000
Elongation, % 700 400 150 300
Compressive strength, p.s.i. - - - -
Tear strength (ASTM D1004) 200pli 185pli 270pli -
Impact strength, ft. lb./in. of notch (1/2x1/2 in. notched bar, izod test) - - - No break
Hardness, Rockwell A25-80 (Shore) A60-70 (Shore) 15 second shore A 89.5+ 15 second shore D 46

ELECTRICAL CHARACTERISTICS
Volume resistivity, ohm/cm3
(50% RH and 23°C.)
- - - 100
Dielectric constant, 60 cyc. - - - -
Dissipation (power)factor, 60 cyc. - - - -

SERVICE TEMPERATURES
Continuous °C/°F 232/450 93/200 149/250 140ºF
Intermittent °C/°F 316/600 177/350 260/500 160ºF
Brittleness °C/°F -32/-29 -32/-26 - <-90ºF

RESISTANCE CHARACTERISTICS
Water absorp., 24 hr., 1/8” thick,% - - - -
Burning rate (flammability), in./min. Very Slow Slow Slow Slow
Effect of sunlight Very Resistant Good Resistance Good Resistance Very Resistant
Effect of weak acids Poor Very Resistant Very Resistant Resistant
Effect of strong acids Poor Resistant Resistant Resistant
Effect of weak alkalies Poor Very Resistant Very Resistant Resistant
Effect of strong alkalies Poor Resistant Resistant Resistant
Effect of organic solvents Moderate Good resistance to alcohols, alphatic hydrocarbons and oils Good Resistance Resistant
Machine qualities Poor Poor Good Good
Clarity (Natural Material) Clear to opaque Clear to opaque Opaque Opaque
Abrasion resistance Low Very Good Very Good Low


For special materials options, contact Customer Service
*Property specifications of Caplugs parts are subject to change without notification.
DIMENSIONAL TOLERANCES*
Caplugs parts are designed in accord with functional dimensions and will perform to dimensions listed in this catalog. In view of the flexibility and stretch of most of the materials used in Caplugs parts, it is recommended that the following tolerances be used for checking purposes, especially by those unfamiliar with measuring this material.
**Independent Third Party Testing supports our published claims of Flex500PLUS successfully performing under intermittent service temperatures of over 500º F.
Tolerances for Inch dimensions given to three decimal places.
±.010’’ per each inch of length. Minimum is ±.010’’ where dimension is less than one inch.
Examples:
Tolerance for .750’’ dimension is ±.010’’
Reason: Although .750’‘x ±.010’’ = ±.0075’‘, ±.010’’ is the minimum. Tolerance for 1.000’’ is ±.010’‘.
Reason: 1.000’‘x±.010’’ = ±.010’‘. Tolerance for 1.500’’ dimension is ± .015’‘.
Reason: 1.500’’ x ±.010’’ = ±.015’‘.
Tolerances for Inch dimensions given to two decimal places.
±.020’’ per each inch of length. Minimum is ±.020’’ where dimension is less than one inch.
Examples:
Tolerance for .75’’ dimension is ±.020’‘.
Reason: Although .75’’ x ±.020’’ = ±.015’‘, ±.020’’ is the minimum. Tolerance for 1.00’’ dimension is ±.020’‘.
Reason: 1.00’‘x±.020’’ = ±.020’‘. Tolerance for 1.50’’ is ±.030’‘.
Reason: 1.50’‘x±.020’’ = ±.030’‘.
Tolerances for metric dimensions given to two decimal places.
±.25mm per each 25.40mm of length (.01 mm per mm). Minimum is ± .25mm where dimension is less than 25.40mm.
Examples:
Tolerance for 19.00mm dimension is ± .25mm.
Reason: Although 19.00mm x ± .01 is ± .19mm, .25mm is the minimum. Tolerance for 25.40mm is ± .25mm.
Reason: 25.40mm x ± .01mm = ± .25mm. Tolerance for 38.10mm is ± .38mm.
Reason: 38.10mm x ± .01mm = ± .38mm.
Tolerances for metric dimensions given to one decimal place.
± .5mm per each 25.4mm of length (.02 mm per mm). Minimum is ± .5 where dimension is less than 25.4mm.
Examples:
Tolerance for 19.0mm dimension is ± .5mm.
Reason: Although 19.0mm x ± .02mm = ± .38mm, ± .5mm is the minimum. Tolerance for 25.4mm dimension is ± .5mm.
Reason: 25.4mm x ± .02mm = ± .5mm. Tolerance for 38.1mm dimension is ± .76mm.
Reason: 38.1mm x ± .02mm = ± .76mm.