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GENERAL PURPOSE HIGH TEMPERATURE BLACK PERFLUOROELASTOMER

Z1028 is our most popular general purpose FFKM compound due to its relative low cost and broad range of chemical and temperature resistance. Used as a cost effective alternative to 6375, 4079 and 7075 in countless applications across various industries like Petro-Chem, Paint and Ink applications where resistance to harsh solvents is required. Available in o-rings and custom shapes. Our experienced application engineers welcome the opportunity to assist you in selecting the compound that provides the best value for your application.


FEATURES AND BENEFITS

  • Cost effective
  • Nearly universal chemical compatibility
  • Low compression set


APPLICATION EXAMPLES

  • Chemical sprayers, injectors and reactors
  • Connectors, Controls & Filters
  • Petro-Chem equipment, Sour gas
  • Ink handling & spraying equipment
  • Inorganic & Organic Acids & Alkine
  • Ketones, Esters, Ethers, Aldehydes
  • Solvents
    • Acetone, Heptane
    • Glycol ethers, Naphtha
    • Toluene, Turpentine
    • White spirit, Xylene
    • Methyl ethyl ketone (MEK)
    • Dimethylformamide (DMF)
  

TYPICAL PHYSICAL PROPERTIES

  • Good dynamic properties - Long service life
  • Compatible with steam < 500° F
  • Compatible with amines < 100° F
  • Lab Instrumentation
  • Liquid chromatography equipment
  • Mechanical seals
  • Painting equipment
  • Pumps & Valves
  • Aerospace Fuels, Skydrol & Oils
  • Semiconductor Applications
    • Dry etch
    • Strip
    • LPCVD
    • Litho/Track
    • ECP
    • Exhaust valves

PROPERTIES

ASTM

TYPICAL VALUE

Color

  

Black

Material Type

FFKM

FFKM

Hardness: (oIRHD)

D1415

77
 

D2240

  

Tensile Strength MPa (PSI)

D412

14.7 (2,120)

Elongation at Break

D412

165%

Compression Set

72 hrs. @ 200° C (392 ° F)

D395

20%

Min Operating Temp (lower spikes)

  

-15 ° C ( 5° F)

Max Operating Temp (higher spikes)

  

320 ° C ( 608° F)
 

CHEMICAL RESISTANCE

CHEMICAL

RATING

Inorganic acid

A

Organic acid

A

Alkalis

A

Amines (RT)

A

Hot amines (>70° C)

C*

Water / Steam

A

Ketons

A

Esters

A

Ethers

A

Adelhydes

A

Alcohols

A

Hydro carbons

A

Sour gas

A

Lubricants

A

Fluorinated fluids

C

TESTING RESULTS of MARKEZ® Z1028 UNDER VARIOUS CONDITIONS

*Markez Z1028 provides excellent chemical compatibility with most chemicals, including Amines below 70° C. For hot amines over 70o C, use Markez Z1352 compound.

     

RATING SYMBOL

VOLUME SWELLING

A

<10%

B

10-30%

C

30-50%

D

>50%

Markez Z1028 shows good compatibility with hot acids with minor physical property changes.

ACIDS

ALKALINE AND AMINES

HCL 37%

80° C for 70 hrs.

Tensile strength change, %

-4.0

Elongation change, %

-15.0

Hardness, Shore A

-1.0

Volume change, %

1.6

KOH, 50%

125° C for 168 hrs.

Tensile strength change, %

-10.0

Elongation change, %

-15.0

Hardness, Shore A

-2.0

Volume change, %

0.4

HF 49%

80° C for 70 hrs.

Tensile strength change, %

5

Elongation change, %

-23

Hardness, Shore A

0

Volume change, %

0.3

N-methyl-diethanolamine (MDEA)

60° C for 336 hrs.

Tensile strength change, %

  

Elongation change, %

  

Hardness, Shore A

  

Volume change, %

  

Nitric acid 65%

80° C for 70 hrs.

Tensile strength change, %

-30

Elongation change, %

5

Hardness, Shore A

-10

Volume change, %

10

NH, 28%

100° C for 336 hrs.

Tensile strength change, %

-15

Elongation change, %

-18

Hardness, Shore A

-7

Volume change, %

15

Glacial acetic acid

80° C for 70 hrs.

Tensile strength change, %

-35

Elongation change, %

-3

Hardness, Shore A

-10

Volume change, %

7

Ethylene diamine

60° C for 336 hrs.

Tensile strength change, %

-10

Elongation change, %

-13

Hardness, Shore A

-8

Volume change, %

20

Volume change, %, (23° C for 504 hrs.)

1.8
 

WATER AND STEAM

AEROSPACE FLUIDS

Water

220° C for 168 hrs.

Tensile strength change, %

-12.0

Elongation change, %

1.0

Hardness, Shore A

-1.0

Volume change, %

2.0

Fuel B

23° C for 70 hrs.

Tensile strength change, %

4.0

Elongation change, %

-2.0

Hardness, Shore A

1.0

Volume change, %

0.2

Steam

220° C for 168 hrs.

Tensile strength change, %

-9.0

Elongation change, %

5.0

Hardness, Shore A

-2.0

Volume change, %

2.2

Skydrol LD4

125° C for 70 hrs.

Tensile strength change, %

-19.0

Elongation change, %

14.0

Hardness, Shore A

-4.0

Volume change, %

4.6

Reference Oil 300

175° C for 720 hrs.

Tensile strength change, %

-9.0

Elongation change, %

6.0

Hardness, Shore A

-2.0

Volume change, %

0.6

The peroxide curing system used to cross-link the Markez Z1028 compound gives it superior resistance to hot water and steam below 500° F.

ELECTRICAL PROPERTIES

Dielectric constant and loss factor at 50 Hz frequency Volume and surface resistivity measured applying 100 V direct tension

Dielectrical Constant

∈′

3.5

Loss Factor

tan (δ)

0.03

Surface resistivity

Rs (Ω)

5 x 10^16

Volume resistivity

Rv (Ω cm)

6.1 x 10^16

GAS PERMEATION RATE

Permeation rate at 30° C (cm3 (STP)-mm/m2-atm-d)

Nitrogen

250

Oxygen

450

Helium

5400

COMPRESSION SET, %

ASTM REQUIREMENT

TYPICAL VALUE

70 hrs. @ 200° C

40

20

70 hrs. @ 230° C

40

24

336 hrs. @ 230° C

55

41