Andrew Roberts Inc

HIGH PERFORMANCE TAPES, FABRICS & BELTS
 
Reinforced Solid 
Silicone Rubber
 

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CF3320, available in three thicknesses, was developed to meet AMS 3320.  Consequently,  3320 has lubricating oil resistance and excellent compression set resistance.

CF4032 and CF4050 are thin, flexible and abrasion-resistant for general-purpose use.

CF4420 is specially formulated for thermal stability and long life under extreme heat and pressure for extended dwell times. It resists reversion (i.e. softening and outgassing) longer than general purpose silicone. Throughout its useful life, 4420 has thermal stability for consistent thermal conductivity.

CF4444 has a specially formulated rubber compound to give better reversion resistance. The reinforcement is a special flexible, compressible COHRlastic silicone closed cell sponge is  designed for high performance gasketing, thermal shielding, vibration mounts and press pads. It is available in six constructions.

CF4451 is a fiberglass fabric coated with static dissipating silicone rubber having a surface resistivity of 1 x 105 Ohms – cm. Virtually  eliminates static electric discharges which cause operator discomfort and can potentially damage electrical laminates.

CF4480 utilizes our most reversion resistant silicone rubber compound. The product is designed for use in applications involving the tough combination of prolonged high-pressure confinement at temperatures in the range of 375°F to 650°F.

CF silicone solid rubber reinforced with fiberglass is a dimensionally-stable, durable material for press pads, belting and gasketing. It is available in six constructions.  (see below)

 

 
COMMON PROPERTIES  
Dielectric Strength

500 volts/mil (approx.)

Thermal Conductivity                                     (avg. from +75 to 350ºF) 1.9 BTU in/hr,ft ºF
Elongation at Break Less than 10%
Linear Thermal Expansion 4.7 x 10 4 in./in./ºF (fiberglass) 1.5 x 10 4 in./in./ºF (silicone rubber)
 

CONTINUOUS LENGTH

Width

36" wide

40" wide

38" wide

40" wide

SPECIFIC PROPERTIES 4032 4050 3320 4420 4444 4451 4480
Color Gray Gray Red Brown Red Black dk Gray
Thickness (inches)* 1/32   1/16 3/32 1/8" .045 1/16 1/16 3/32 1/8 1/16 .078 1/16
Tolerance (inches)* +/- .005 +/- .005 +/- .005 +/- .010 +/- .010 +/- .005 +/- .005 +/- .005 +/- .010 +/- .010 +/- .005 +/- .005 +/- .005
Fiberglass Thickness (inches) .014 .014 .014 .014 .014 .007 .014 .135 .135 .135 .014 .014 .014
Weight (ounces per square yard)* 35 57 65 94 124 48 65 72 104 144 69 89 65
Fiberglass (% of weight) 37 23 20 14 10 13 20 20 14 10 20 16 20
Weight Loss (4 hrs at 400ºF) (%)* 1.0 1.5 1.5 1.5 1.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.1 <0.1 <0.5
Break Strength (warp) (PPI)* 300 300 300 300 300 225 300 400 400 400 300 300 300
Diaphragm Burst Strength (PSI)* 750 750 750 750 750 750 750 800 800 800 750 750 750
Durometer (Shore A)** 81 75 74 66 65 78 74 79 72 67 76 74 81

* ASTM Test Method used

** Actual rubber durometer is 50 for 4032; 60 for 3320, 4420, 4444; 65 for 4451; 70 for 4480

 

Contact Us

  Monday - Thursday   Toll Free: 800 637 6694
  8:30 to 5:00 - EST   Telephone: 508 653 6412
  Friday - 8:30 to 4:30   FAX: 508 651 3055

E-mail: info@andrewroberts.com

 

 

 

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