| Polyethylene | Vinyl | ||||||||
| Properties | Low Density | Medium Density | High Density | Polypropylene | Ethylene Vinyl Acetate |
Nylon | Thermoplastic Rubber |
Standard | High Temp. |
| Specific Gravity | 0.910-0.925 | 0.926-0.940 | 0.941-0.965 | 0.902-0.906 | .931-.933 | 1.13-1.15 | 0.94 | 0.98-2.0 | 1.22-1.32 |
| Tensile Strength P.S.I. | 600-2300 | 1200-3500 | 3100-5500 | 4300-5500 | 1700-2000 | 900-12000 | 2750 | 50-5000 | 2175min |
| Elongation% | 90-800 | 50-600 | 15-100 | 200-700 | 700-800 | 60-300 | 600 | 50-550 | 175mmin |
| Compressive Strength P.S.I. | — | — | 3200 | 5500-8000 | — | 6700-12500 | — | — | — |
| Flexural Strength P.S.I. | — | 4800-7000 | 1000 | 6000-8000 | — | No Break | — | — | — |
| Specific Heat Cal/C/gm | 0.55 | 0.55 | 0.55 | 0.46 | 0.55 | 0.04 | — | — | — |
| Resistance to Heat °F | 180-200 | 220-250 | 250 | 250-320 | 160-185 | 180-300 | 300 | 300-325 | 450 |
| Heat Distortion Temperature °F |
100-121 |
120-165 (66 P.S.I.) |
140-180 (66 P.S.I.) |
205-230 (66 P.S.I.) |
95-105 | 360-365 | — | — | — |
| Water Absorption %24 hr. 1/8" Thickness | <0.01 | 0.01 | 0.01 | 0.01 | .005-0.13 | — | — | — | — |
| Effect of Sunlight | **see below | **see below | **see below | Crazes Rapidly | **see below | Discolors Slightly | Excellent Ozone Resistance | Excellent Ozone Resistance | Good Ozone Resistance |
| Effect of Weak Acids | Resistant | Very Resistant | Very Resistant | None | Resistant | Resistant | Resistant | Resistant | Resistant |
| Effect of Strong Acids | Attacked by Oxidizing Acid | Attacked by Slowly Oxidizing Acids |
Attacked by Slowly Oxidizing Acids |
Attacked by Oxidizing Acids |
Attacked by |
Attacked | Resistant | Fair Resistance | Fair Resistance |
| Effect of Weak Alkalies | Resistant | Very Resistant | Very Resistant | None | Resistant | None | Resistant | Resistant | Fair |
| Effect of Strong Alkalies | Resistant | Very Resistant | Very Resistant | Very Resistant | Resistant | None | Resistant | Fair Resistance | Poor |
| Effect of Organic Solvents | Resistant Below 60°C | Resistant Below 60°C | Resistant Below 80°C | Resistant Below 80°C | Resistant Below 50°C | Resists Most | Resistant | Fair Resistance | Poor |
| Effect of Oils and Greases | Attacked by Some | Attacked by Some | Slight | Attacked by Some | Attacked by Some | None | Somewhat Resistant* | Fair Resistance | Poor |
| Impact Strength ft./ lb./ In. Notch | No Break | 0.5-16 | 1.5-20 | 0.4 | No Break | 1.0-5.5 | No Break | — | — |
ASTM test methods apply. Niagara cannot be held responsible for accuracy of these figures.
* Hydrocarbons will cause thermoplastic rubber to swell if soaked; it will not affect the properties.
It is resistant if only splashed with hydrocarbons.
** Crazes rapidly unless black color or ultraviolet inhibitor is used.
Phone: 1-800-458-0465 or 1-814-868-3671 • Fax: 1-800-358-4391 or 1-814-864-2423 • e-mail: info@NiagaraCapsandPlugs.com