Ball Valve Seat & Seal Materials Specifications
Ball valve seat and seal material specifications cover PTFE, R-PTFE, Devlon V, Delrin, Nylon, PEEK, PCTFE; Viton B, HNBR etc. and their the Specific Gravity, Hardness, Tensile Strenght,Application etc.
Seat Materials Specifications
| Delrin | Nylon | PTFE | R-PTFE | Devlon V | PEEK (HT4) | PCTFE (KEL-F) | |
| TYPE | Molded or machined |
Molded, cast or machined |
Molded or machined |
Molded or machined |
Molded or machined |
Molded or machined |
Molded or machined |
| Specific Gravity | 1.40-1.42 | 1.02±0.02 | 2.16 | 2.22-2.30 | 1.14 | 1.30-1.34 | 2.11-2.16 |
| Hardness (ASTM D2240) | *R-120±5 | D75±5 | D58±5 | D60±5 | D79±l | D85±5 | D75-D80 |
| Tensile Strenght (PSI) | 6600-7500 | 8000 (min) | 2100-2400 | 4640 (min) | 11500 (min) | 11000 (min) | 4930 (min) |
| Ultimate Elongation (%) | 190-230 | 250min (<6M) 16min (>6W) | 240-250 | 650 | 5.37 | 30(min) | 100-250 |
| Temperature Limitations (°F) | -50 to 180 | -70 to 200 | -100 to 425 | -25 to 500 | -100 to 392 | -100 to 450 | -328 to 158 |
| Color Code | WHITE | NATURAL | WHITE | GREY BLACK | YELLOW | VARIOUS | WHITE |
| Recommended Application | High Pressure & Low Temp. | High Pressure & Low Temp. | Chemical, Cryogenic & Low Pressure | Chemical, Cryogenic & Low Pressure | High Pressure & Low-Medium Temp. | High Pressure & Temperature services with steam | Chemical, Cryogenic, High Pressure, & Low Temp. |
Seal Materials Specifications
| Viton B | BUNAN | HNBR | EPDM | Devlon | |
| TYPE | Molded | Molded | Molded | Molded | Molded |
| Specific Gravity | 1.85±0.02 | 1.31 | 1.28±0.3 | 1.93 | — |
| Hardness | D75±5 | D90±5 | D90±5 | D90±5 | D79±9 |
| Tensile Strength (PSI) | 2175 | — | 3481 | 1960 | 2680(min) |
| Ultimate Elongation (%) | 170 | — | 205(min) | 101 | 138(min) |
| Temperature Limitations (°F) | -20 to 400 | -15 to 250 | -65 to 250 | -60 to 500 | +32 to 500 |
| Color Code | Orange | — | BU\CK | Fluorescent Orange | Light Blue (2 MARKS) |
Ball Valve Seat Pressure Temperature Ratings
