Properties* Aluminum Polyethylene Polypropylene Impact (rubber-modified) Ethylene Vinyl Acetate FlexTemp Thermoplastic Rubber Silicone Rubber Vinyl
Low-Density High-Density Standard High-Temp
Mechanical Characteristics
Specific gravity (density) 2.73 0.910 – 0.925 0.941 – 0.965 0.890. – 0.91 .920 – .950 .940 – .960 1.18 1.2 1.2
Tensile strength, p.s.i. 31 – 42 600 – 2300 3100 – 5500 2800 – 4400 1440 – 2500 2400 – 3100 200 – 1500 2300 2100
Elongation, % 20% min. 90.0 – 800.0 20.0 – 1000.0 350.0 – >500.0 550 – 900 500 – 620 700 400 270
Compressive strength, p.s.i. 11 2700 – 3600 4000 – 6500
Tear strength (ASTM D1004) 200pli 185pli 270pli
Impact strength, ft. lb./in. of notch (1/2x1/2 in. notched bar, izod test) No break No break 0.5 – 20.0 1.0 – 15.0 @ 73°F No break
Hardness, Rockwell D41 – D46 (Shore) R10 D60 – 70 (Shore) R50-R85 D17 – 45 (Shore) A25 – 80 (Shore) A60 – 70 (Shore) A80 – 90 (Shore)
Electrical Characteristics
Volume resistivity, ohm/cm3 (50% RH and 23°C) >1016 >1016 >1015 >1015
Dielectric constant, 60 cyc. 2.25 – 2.35 2.30 – 2.35 2.3 2.50 – 3.16
Dissipation (power) factor, 60 cyc. <0.0005 <0.0005 >0.0003 >0.0030
Service Temperatures
Continuous °C/°F 343/650 66/150 74/165 121/250 60/140 132/275 232/450 93/200 149/300
Intermittent °C/°F 343/650 79/175 102/215     149/300 316/600 177/350 246/475
Brittleness °C/°F -70/-94 <-70/<-94 -18/0 <-70/<-94 <-68/<-90 0 -32/-29 -32/-26
Resistance Characteristics
Water absorp., 24 hr., 1/8" thick, % 0 <0.015 <0.01 <0.01 .05-.13 <.10
Burning rate (flammability), in./min. Very Slow (1.04) Very Slow (1.00 – 1.04) Slow Slow Very Slow Slow Slow
Effect of sunlight Unprotected material crazes rapidly. Requires black for complete protection. Very Resistant Good Resistance Good Resistance
Effect of weak acids Varies Resistant Very Resistant Completely Resistant Resistant Very Resistant Poor Very Resistant Very Resistant
Effect of strong acids Varies Attacked by oxidizing acids Attacked slowly by oxidizing acids Resistant to oxidizing acids Resistant Poor Resistant Resistant
Effect of weak alkalies Cleaning Agent Resistant Very Resistant Completely Resistant Resistant Very Resistant Poor Resistant Resistant
Effect of strong alkalies Etches Resistant Very Resistant Very Resistant Resistant Very Resistant Poor Resistant Resistant
Effect of organic solvents None Resistant (below 60°C) Resistant (below 80°C) Attacked by hydrocarbons and chlorinated hydrocarbons Resistant Swells in contact with hydrocarbons and chlorinated hydrocarbons Moderate Good Resistance to alcohols, aliphatic hydrocarbons and oils Good Resistance to alcohols, aliphatic hydrocarbons and oils
Machine qualities Fair Good Excellent Good Fair Fair Poor Poor Poor
Clarity (Natural Material) Translucent to opaque Translucent to opaque Translucent Translucent to opaque Opaque Clear to opaque Clear to opaque
Abrasion resistance Low Low Very Good Very Good

Properties* PVC Extrusion PETG Flex500** Static Conductive Static Dissipative LLDPE Nylon ABS
Mechanical Characteristics
Specific gravity (density) 1.2 1.3 1.35 1.06 1.17 0.925 g/cm3 1.13 g/cm33 1.05
Tensile strength, p.s.i. 2300 5800 2000 1000 1900 10 Mpa 50 Mpa 5990
Elongation, % 400 50 150 300 360 >500
Compressive strength, p.s.i. 7300
Tear strength (ASTM D1004) 185 270pli 200pli
Impact strength, ft. lb./in. of notch (1/2x1/2 in. notched bar, izod test) 0.19 – 0.66 No break 1.2 ft. - lb.In.
Hardness, Rockwell A60-70 (Shore) Shore R 108 15 Second Shore A84–94 15 Second Shore D 46 A55 – 65 Shore 47 (Shore D) 54 (Shore D) 109
Electrical Characteristics
Volume resistivity, ohm/cm3 (50% RH and 23°C) 100 Surface Resistivity 109 OHM/SQ 1018
Dielectric constant, 60 cyc. 3 – 4
Dissipation (power) factor, 60 cyc. 20 – 300 104
Service Temperatures
Continuous °C/°F 93/200 145°F 149/300 140°F 140°F 70/158 120/248
Intermittent °C/°F 177/350 160°F 260/500 160°F 160°F 90/194 180/356
Brittleness °C/°F -32/-26 -40°F <-90°F   <-70/158
Resistance Characteristics
Water absorp., 24 hr., 1/8" thick, % 0.1 to 0.2%
Burning rate (flammability), in./min. Slow Slow Slow Slow Very Slow UL 94 HB
Effect of sunlight Good Resistance Fair Resistance Good Resistance Very Resistant Good Resistance Limited Resistance Resistant
Effect of weak acids Very Resistant Very Resistant Resistant Very Resistant Resistant Not Resistant
Effect of strong acids Resistant Resistant Resistant Resistant Resistant Not Resistant
Effect of weak alkalies Very Resistant Very Resistant Resistant Very Resistant Resistant Resistant
Effect of strong alkalies Resistant Resistant Resistant Resistant Resistant Resistant
Effect of organic solvents Good resistance to alcohols, aliphatic hydrocarbons and oil Good Resistance Resistant Good Resistance Resistant Resistant
Machine qualities Poor Very Good Good Good Poor Good Good
Clarity (Natural Material) Clear to opaque Clear Opaque Opaque Translucent Translucent Opaque
Abrasion resistance Very Good Very Good Very Good Low Very Good

This data is to be used as reference for selection purposes only. This data is not a comprehensive representation of specifications for every material or part offered. For specific part or material certifications, please contact a Technical Sales Representative at 1.888.CAPLUGS.

For special materials options, contact Customer Service.

*Property specifications of Caplugs parts are subject to change without notification.

**Independent Third Party Testing supports our published claims of Flex500™ successfully performing under intermittent service temperatures of over 500°F.

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