Blue Gylon® 3504 Gasket Material
Blue Gylon® 3504 is a highly compressible modified PTFE gasket material. It has excellent chemical resistance and retains all the positive characteristics of PTFE, but minimises the creep and flow problems associated with conventional PTFE products. It is blue in colour and conforms to FDA requirements
Temperature: -268°C to +260°C
Max pressure: 55bar. Applications: used with glass-lined, enamelled or plastic flanges in the chemical, pharmaceutical, food processing, and electronics sectors.
Availability:
| Sheet size (mtrs): |
1.5 x 1.52 |
| Thickness (mm): |
0.8, 1.0, 1.6, 2.0, 3.2 |
Technical specification
| Material Properties* |
| Colour |
Blue |
| Composition |
PTFE with glass microspheres |
| Fluid Services1 |
Moderate concentrations of acids, some caustics, hydrocarbons, solvents,
hydrogen peroxide, refrigerants and cryogenics |
Temperature2 ºF (ºC)
Maximum
Continuous Max |
-450 (-268)
+500 (+260) |
| Pressure2 Maximum psig (bar) |
800 (55) |
P x T (max.)2 psig x ºF (bar x ºC)
1/32 and 1/16"
1/8" |
350,000 (12,000)
250,000 (8,600) |
| Flammability |
Will not burn |
| Bacterial Growth |
Will not support |
| Meets Specification |
ABS (American Bureau of Shipping), FDA (Food and Drug Administration)
and USP (US Pharmacopeia) |
| Typical Physical Properties* |
| ASTM F36 |
Compressibility % |
25-45 |
| ASTM F36 |
Recovery % |
30 |
| ASTM F38 |
Creep Relaxation % |
40.0 |
| ASTM F152 |
Tensile, Across Grain, psi (N/mm2) |
2000 (13.8) |
| ASTM D792 |
Specific Gravity |
1.70 |
| ASTM D1708 |
Modulus @ 100% Elongation psi (N/mm2) |
1500 (10.3) |
| ASTM F433 |
Thermal Conductivity (k) W/mºK (Btu.-in./hr.-ft.2-ºF) |
0.14-0.24 (1.00-1.65) |
Dielectric Properties range volts/mil
Sample Conditioning
3hrs @ 250ºF
96hrs @ 100% Relative Humidity |
1/16"
318
245 |
1/8"
-
- |
Design Factors
"m" Factor
"y" Factor, psi (N/mm2) |
1/16" & under
3.0
1650 (11.4) |
1/8"
2.5
3000 (20.7) |
Gasket Constraints 1/16"
1/8" |
Gb=183 a=0.357 Gs=4.01 x 10-3
Gb=1008 a=0.221 Gs=2.23 |
| Line Call Out |
F456999A9B7E99K3M6(3) |
Sealing Characteristics*
| |
ASTM F37B
Fuel A |
DIN 3535-4
Gas Permeability |
| Gasket Load psi (N/mm2) |
1000 (7) |
4640 (32) |
| Internal Pressure psig (bar) |
9.8 (0.7) |
580 (40) |
| Leakage |
0.12 ml/hr |
<0.015 cc/min |
This is a general guide and should not be the sole means of selecting or rejecting this material. ASTM test results in accordance with ASTM F-104; Properties based on 1/32" (0.8mm) sheet thickness unless otherwise mentioned.
*Values do not constitute Specification Limits
1 refer to sales team for chemical resistance guide
2 Based on ANSI RF flanges at our preferred torque. When approaching maximum pressure, continuous operating temperature, minimum temperature or 50% of maximum PxT, consult Applications Engineering.
3 Increase in IRM Oil #903 (fourth numeral 9 is weight): Thickness 1.0% max, Weight = 2.0% max. Sixth numeral 9: % Increase in water: Weight = 1.0% max. A9: leakage in fuel A (Isooctane), Pressure = 9.8psig (0.7bar), Gasket Load = 1000psi (7.0N/mm2): Typical = 0.12ml/hr, Max = 1.0/hr. E99: % Increase in ASTM Fuel B: Weight: 2.0% max., Thickness: 1.0% max.