GASKETS

Engineering Data/FAQs

Chemical Resistance of Garlock
Compressed Sheet and GYLON®


A general guide for selection of gasketing material

Key: A = Suitable
B = Depends on Operating Conditions
C = Unsuitable
— = No data or insufficient evidence		         Alphabetical by Chemical
A & B
C
D thru G
H thru M
N thru P
Q thru S
T thru Z
CHEMICAL Garlock Style Number
GYLON® IFG®
5500
G-9900
9850		 9800 ST-706 3000
3001
CP-3900		 3200
3400
CP-3920		 3300
3800		 IFG®
5507
3700
3500 3565
3504		 3510 3560 3561 3540
3545		 3530
Quinoline A A A B B A A C C C C C C C
Quinone A A A A A A – – – – – – – –
Refrigerants See Specific Ratings Below
      10 A A A B B A A C C C C C C C
      11 A A A A A A A A C B A C C C
      12 A A A A A A A A A B A A A A
      13 A A A A A A A A A B A A A A
      13B1 A A A A A A A A A B A A A A
      21 A A A A A A A C C C C C A C
      22 A A A A A A A B B B B B A A
      23 A A A A A A A C A C C A A A
      31 A A A A A A A C A C C A A A
      32 A A A A A A A A A B A A A A
      112 A A A A A A A A C B A C A C
      113 A A A A A A A A A B A A A C
      114 A A A A A A A A A B A A A A
      114B2 A A A A A A A A C B A C A C
      115 A A A A A A A A A B A A A A
      123 A A A A A A A C3 C C3 C3 C A3 C
      124 A A A A A A A C A C C A A A
      125 A A A A A A A – A – – A A A
      134a A A A A A A A B A B B A A A
      141b A A A A A A A A – B A – A –
      142b A A A A A A A A A B A A A A
      143a A A A A A A A – A – – A A A
      152a A A A A A A A A A B A A A A
      218 A A A A A A A A A B A A A A
      290 A A A A A A A A C B A C A C
      500 A A A A A A A A – B A – A –
      502 A A A A A A A A A B A A A –
      503 A A A A A A A C A C C A A A
      C316 A A A A A A A A A B A A A A
      C318 A A A A A A A A A B A A A A
      HP62 A A A A A A A A – B A – A –
      HP80 A A A A A A A – – – – – A –
      HP81 A A A A A A A – – – – – A –
Salt Water A A A B B A A A A A A A A A
Saltpeter, Potassium Nitrate A A A A A A – B B B B B B B
2,4-D Salts and Esters A A A — — A A C C C C C C C
Sewage A A A A A A A A B A A B B B
Silver Nitrate A A A A A A — B A B B A A A
Skydrols A A A A A A A C C C C C C B
Soap Solutions A A A A A A A A A A A A A A
Soda Ash, Sodium Carbonate A A A A A A A A A A A A A A
Sodium Bicarbonate, Baking Soda A A A A A A A A A A A A A A
Sodium Bisulfate A A A A A A A A A A A A A A
Sodium Bisulfite A A A B B A A A A A A A A A
Sodium Chlorate A A A A A A A C — C C — C C
Sodium Chloride A A A B B A A A A A A A A A
Sodium Cyanide A A A A A A A A A A A A A A
Sodium, Elemental C C C C C C C C C C C C C C
Sodium Hydroxide C B6 A6 C A6 A6 A6 C C C C C C C
Sodium Hypochlorite A A A B B A — C — C C — C C
Sodium Metaborate Peroxyhydrate A A A B B A C B B B B B B B
Sodium Metaphosphate B A A B A A A A A A A A A A
Sodium Nitrate A A A A A A — B B B B B B B
Sodium Perborate A A A B B A C B B B B B B B
Sodium Peroxide A A A A A A C C C C C C C C
Sodium Phosphate,
   Monobasic		 A A A A A A A A A A A A A A
   Dibasic B B A B A A A A A A A A A A
   Tribasic C B A C A A A A A A A A A A
Sodium Silicate B B A B A A A B B B B4 B B B4
Sodium Sulfate A A A A A A A A A A A A A A
Sodium Sulfide A A A A A A A A A A A A A A
Sodium Superoxide A A A A A A C C C C C C C C
Sodium Thiosulfate, "Hypo" A A A A A A A A A A A A A A
Soybean Oil10 A A A A A A A A C A A C B B
Stannic Chloride A A A C C A A B B B B B — B
Steam, Saturated A A A A A A A A A A A9 A A A
   Superheated — — — — — — — C C A C C C C
Stearic Acid A A A A A A A A A A A A A A
Stoddard Solvent A A A A A A A A C A B C B C
Styrene A1 A1 A1 A1 A1 A1 A1 C C C C C C C
Styrene Oxide A A A A A A A C C C C C C C
Sulfur Chloride A A A C C A A C C C C C C C
Sulfur Dioxide A A A A A A A C C C C C C B
Sulfur, Molten A A A A A A A C C C C C B C
Sulfur Trioxide,
   Dry		 A A A A A A — C C C C C C C
   Wet A A A B B A B C C C C C C C
Sulfuric Acid,
   10%, 150°F
   and below		 A A A B B A — B C B B C B B
   10%, Above 150°F A A A C C A — — C — — C C C
   10-75%, 500°F and below A A A C C A — — C — — C C C
   75-98%, 150°F and below A A B C C A C C C C C C C C
   75-98%, 150°F to 500°F A B B C C A C C C C C C C C
Sulfuric Acid, Fuming A — C C C A C C C C C C C C
Sulfurous Acid A A A B B A — B B B B B — —
Syltherm 800 A A A A A A A B B B B B B B
Syltherm XLT A A A A A A A B B B B B B B

 

Notes:

  1. Consult the factory regarding your specific applications.
  2. IFG® Styles 5500 and 5507 are rated "B".
  3. There have been conflicting field reports concerning the suitability of NBR and neoprene bound gaskets in 123. End users should take note.
  4. IFG® Styles 5500 and 5507 are rated "A".
  5. Some chromium plating baths contain fluorides that can attack silica and silicate type fillers in some GYLON® styles. If the bath is known to contain little or no fluoride, all GYLON® styles should be suitable for use.
  6. These GYLON® Styles can be expected to be suitable to 45-59% concentration at temperatures up to 250ºF (121ºC).
  7. Use GYLON® Styles 3502, 3503, 3505, 3562, 3563. These GYLON® styles are specially processed, cleaned and packaged for oxygen service.
  8. This GYLON® contains a stainless steel insert. There is a possibility that this might contribute traces of iron to form iron tannates, resulting in undesirable color in the tannic acid.
  9. Styles CP-3900, 3000 and 3001 are not preferred choices for steam service.
  10. If a gasketing material that conforms to FDA requirement is desired, contact factory for specific recommendations.


WARNING:
Properties/application shown here are typical. Your specific application should not be undertaken without independent study and evaluation for suitability. For specific application recommendations consult Garlock. Failure to select the proper sealing products could result in property damage and/or serious personal injury.
Performance data published here has been developed from field testing, customer field reports and/or in-house testing.
While the utmost care has been used in compiling this information, we assume no responsibility for errors. Specifications subject to change without notice. This edition cancels all previous issues. Subject to change without notice.


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