Fiber Data
| Properties of textile fibers for low and medium temperatures | ||||||
| Fiber’s Generic Name, Trade Name | Cotton | Polyamid Nylon 66 | Polypropylene Herculon(R) | Polyester Dacron(R) | Acrylic Copolymer Orlon(R) | Homopolymer Acrylic Dacron T |
| Recommended continuos operation temp (dry heat) | 180°F 82°C |
200°F 94°C |
200°F(1) 94°C | 270°F 132°C |
248°F 120°C |
284°F 140°C |
| Water vapor saturated condition (moist heat) | 180°F 82°C |
200°F 94°C |
200°F 94°C |
200°F(2) 94°C | 230°F 110°C |
260°F 125°C |
| Maximum (short time) Operation temp (dry Heat) | 200°F 94°C |
250°F 121°C |
225°F 107°C |
300°F 150°C |
248°F 120°C |
284°F 140°C |
| Specific density | 1.5 | 1.14 | 0.9 | 1.38 | 1.16 | 1.17 |
| Relative moisture region in % (at 68°F & 65% relative moisture) |
8.5 | 4.0-4.5 | 0.1 | 0.4 | 1 | 1 |
| Supports combustion | Yes | Yes | Yes | Yes | No | Yes |
| Biological Resistance (bacteria, mildew) | No, If not treated | No Effect | Excellent | No Effect | Very Good | Very Good |
| Resistance to alkalis | Good | Good | Excellent | Fair | Fair | Fair |
| Resistance to mineral acids | Poor | Poor | Excellent | Fair | Good | Very Good |
| Resistance to organic acids | Poor | Poor | Excellent | Fair | Good | Excellent |
| Resistance to oxidizing agents | Fair | Fair | Good | Good | Good | Good |
| Resistance to organic solvents | Very Good | Very Good | Excellent | Good | Very Good | Very Good |
| For dry filtration, High Tempratures | Hot Gas | ||||||
| Fiber’s Generic Name, Trade Name | Polyphenylene Sulfide Ryton(R) | Aramid Nomex(R) | Glass Fiberglass(R) | PTFE Teflon(R) | Polybenzimidazole PBI(R) | Metal Bekinox(R) | Ceramic Nextel 312(R) |
| Recommended continuos operation temp (dry heat) | 375°F 190°C |
400°F 204°C |
500°F 260°C |
500°F 260°C |
500°F 260°C |
840°F 450°C |
2100°F 1150°C |
| Water vapor saturated condition (moist heat) | 375°F 190°C |
350°F 177°C |
500°F 260°C |
500°F(3) 260°C | 500°F 260°C |
750°F 400°C |
2100°F 1150°C |
| Maximum (short time) Operation temp (dry Heat) | 450°F 232°C |
450°F 232°C |
550°F 290°C |
550°F 290°C |
650°F 343°C |
950°F 510°C |
2600°F 1427°C |
| Specific density | 1.38 | 1.38 | 2.54 | 2.3 | 1.43 | 7.9 | 2.7 |
| Relative moisture region in % (at 68°F & 65% relative moisture) |
0.6 | 4.5 | 0 | 0 | 14 | 0 | 0 |
| Supports combustion | No | No | No | No | No | No | No |
| Biological Resistance (bacteria, mildew) | No Effect | No Effect | No Effect | No Effect | No Effect | No Effect | No Effect |
| Resistance to alkalis | Excellent | Good | Fair | Excellent | Good | Very Good | Good |
| Resistance to mineral acids | Excellent | Fair | Very Good | Excellent | Excellent | Very Good | Very Good |
| Resistance to organic acids | Excellent | Fair | Very Good | Excellent | Excellent | Very Good | Very Good |
| Resistance to oxidizing agents | 4 | Poor | Excellent | Excellent | Fair | Very Good | Excellent |
| Resistance to organic solvents | Excellent | Very Good | Very Good | Excellent | Excellent | Very Good | Excellent |
| (1) = 250 F for Type 154 (2) = Not Recommended (3) = 475 F for reverse air and shaker collector (4) = PPS fiber is attached by strong oxidizing agents (for example, at 200 F for 7 days) |
