Silicone Sponge To learn more about Auburn fiberglass-reinforced silicone gasket material, please contact an Auburn Customer Service Representative. Additional technical assistance and/or samples are available upon request...

Product Datasheets for
Silicone Fiberglass
Reinforced Gasket Materials:

FR4032 & FR4050

Product Datasheets from
Auburn's Adhesive-Program:

SP-2021 Silicone Adhesive
AP-2022 Acrylic Adhesive
Hi-Temp Acrylic Adhesive
Silicone Sponge
Fiberglass-Reinforced Solid Silicone Rubber from Auburn is a dimensionally-stable, durable gasket material that is commonly used for press pads, belting and gasketing. It is available in six unique constructions, each of which is described below.
FRF3320, available in three thicknesses, is designed to meet AMS 3320. Consequently, 3320 has lubricating oil resistance and excellent compression set resistance.
FR4032 and FR4050 are thin, flexible and abrasion-resistant fiberglass-reinforced gasket materials intended for general purpose use.
FR4420 is a specially formulated for thermal stability and long life under extreme heat and pressure and 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.
FR4444 has specially formulated rubber compound to give better reversion resistance. The reinforcement is a special crush-resistant fiberglass, making the product excellent for press pads in high-temperature and pressure lamination applications.
FR4451 is a fiberglass fabric coated with static dissipating silicone rubber having a surface resistivity of 1 x 10 ohms-cm. This product virtually eliminates static electric discharges which cause operator discomfort and can potentially damage electrical laminates.
FR4480 utilizes the most reversion-resistant silicone rubber compound. This material is designed for use in applications involving the tough combination of prolonged high-pressure confinement with temperatures in the range of 375° F to 650° F.
Adhesive Backings:
Auburn can apply pressure sensitive silicone or acrylic adhesives to FR standard sheets
(36" x 36" or 24" x 24") or continuous length rolls at 36" wide. Sheet thickness will be 1/32" thick or more. The self-adhering materials permit substantial savings because they are easy to apply, simplify production, and eliminate the high cost of bonding. SP-2021 Silicone Adhesive withstands the same temperature extremes, -100° F to +500° F, as the silicone rubber sheet.
AP-2022 Acrylic adhesive, whose temperature range is -40° F to +300° F, offers the advantage of twice the adhesion to steel and a longer shelf life than regular silicone adhesive. 
Hi-Temp Acrylic Adhesive, newly released, is capable of withstanding temperature of 450° F, while providing the high-bonding strength of acrylic adhesive.  All of these above-mentioned FR Fiberglass-Reinforced Solid Silicone Rubber materials are readily available either plain or with an adhesive affixed to one or both sides. Self-adhering adhesive-backed sheets are protected by an easy-to-remove peel-off liner for application to a clean, dry, degreased surface.

Product Advantages:

High Temperature Resistance to +500° F
Low Temperature Flexibility to -100° F
Compression Set & Crush Resistance
Little or No Out-Gassing
Excellent Dimensional Stability

Non-Stick Surface, Odorless, Tasteless
Long Service Life
Fungus & Bacteria Resistant
Ozone Resistance
Non-Corrosive, Non-Toxic

Ordering Information & Special Orders

Please contact your Auburn Customer Service Representative to obtain price quotations. Products whose durometers, hardnesses, colors, or densities aren't listed as standard are also available upon request. To receive further technical assistance, material recommendations or samples, please contact your Auburn Customer Service Representative.