Silicone Rubber Gaskets

Gasket and Seal Fabricators is a leading supplier of silicone rubber gaskets, seals, and custom silicone products. We deliver effective manufacturing solutions for the most demanding applications, combining high-performance products, competitive pricing, on-time delivery, and exceptional customer service.  Every order meets your exact blueprint specifications and tolerance requirements.

Gasket and Seal Fabricators is AS9100D certified, bringing aerospace-grade quality standards to every silicone gasket we produce.

Silicone rubber is a high-performance elastomer prized for its exceptional resistance to temperature extremes, remaining functional from -67°F to +400°F (intermittent to +450°F). Beyond thermal performance, silicone gaskets offer excellent resistance to chemicals, water, fire, fungal growth, ozone, and aging. The material also delivers outstanding tensile strength, elongation, tear resistance, and compression set. This versatility and long service life make silicone ideal for a wide range of applications.

Your Trusted Source for Silicone Rubber Gaskets

Precision-Cut Silicone Gaskets

We provide custom silicone rubber gaskets in a wide variety of grades, thicknesses, and hardness levels. Our capabilities include standard die cutting as well as flash cutting, which uses CAD drawings and can reverse-engineer existing parts. Standard silicone rubber thickness ranges from .010″ to 1″, with hardness (durometer) typically spanning 30 to 80 Shore A. Choose from a full spectrum of colors, including blue, black, red/orange, white, translucent, and more. Available with or without pressure-sensitive adhesive (PSA) backing in either acrylic or high-temperature formulations.

Conductive Silicone Gaskets

Conductive silicone gaskets provide effective EMI/RFI shielding and electrostatic discharge protection while maintaining silicone’s excellent temperature and environmental resistance. These gaskets are filled with conductive materials such as silver, nickel-coated graphite, or carbon to achieve the required conductivity levels for your application. Our conductive silicone materials (sourced from Parker Chomerics and other leading suppliers) are trusted in aerospace systems, electronics enclosures, telecommunications equipment and medical devices for reliable electromagnetic interference control.

Fluorosilicone combines the temperature flexibility of standard silicone with significantly improved resistance to fuels, oils, and hydrocarbon-based solvents. FVMQ gaskets perform reliably from -75°F to +400°F, making them well suited for aerospace fuel systems, automotive applications, and any environment where exposure to petroleum products is a concern. When your application demands both chemical resistance and wide-temperature performance, fluorosilicone is often the optimal choice.

FDA (Food Grade) Silicone Gaskets

Our FDA-compliant silicone gaskets meet the requirements of FDA 21 CFR 177.2600 for food contact applications. Food-grade silicone is odorless, tasteless, and non-toxic, making it ideal for food and beverage processing equipment, pharmaceutical manufacturing, and medical devices. These gaskets resist bacterial growth and withstand repeated cleaning and sterilization cycles without degrading. Available in the same range of custom sizes, thicknesses, and configurations as our standard silicone products.

Our Full Range of Silicone Gaskets and Seals

Whatever your application requires, we have the silicone to match. From commercial and spec grades to specialized formulations for extreme temperatures, flame resistance, or medical compliance, our inventory covers the full range of silicone gasket materials. Below is a complete list of the silicone types we work with:

    • Coated Fabrics Silicone Sheet
    • Commercial Grade Silicone
    • Conductive Silicone
    • Extreme High Tear Silicone
    • Extreme High Temperature Silicone
    • Fabric Finish Silicone
    • FDA (Food Grade) Silicone
    • Fiberglass Reinforced Silicone
    • Flame Retardant Silicone
    • Fluorosilicone
    • Low Compression Set Silicone
    • Low Outgassing Silicone
    • Medical Grade Silicone (USP Class 6)
    • Metal-Detectable Silicone
    • Mil-Spec Silicone
    • Silicone Foam
    • Silicone Sponge
    • Spec Grade Silicone
    • UL-Rated Silicone

Frequently Asked Questions

What are silicone gaskets used for?

Silicone gaskets are used across aerospace systems, electronics enclosures, telecommunications equipment, medical devices, and food and beverage processing, thanks to their resistance to temperature extremes, chemicals, water, fire, and aging.

What temperature range can silicone gaskets handle?

Silicone rubber remains functional from -67°F to +400°F, with intermittent performance up to +450°F.

What is the difference between silicone and rubber gaskets?

Silicone is a synthetic elastomer built from a silicon-oxygen backbone rather than the carbon-based polymers used in general-purpose rubbers, and that structure gives it a much wider operating range. Our silicone gaskets remain functional from -67°F to +400°F (intermittent to +450°F). Rubber materials generally hold an edge in raw elasticity and oil/fuel resistance, while silicone tends to win on temperature extremes, weathering, and food/medical-grade compliance.

What is fluorosilicone and when should it be used?

Fluorosilicone (FVMQ) combines the temperature flexibility of standard silicone with significantly improved resistance to fuels, oils, and hydrocarbon-based solvents. It performs from -75°F to +400°F, making it well suited for aerospace fuel systems, automotive applications, and any environment with petroleum exposure.

Are silicone gaskets FDA approved?

Yes. The FDA-compliant silicone gaskets meet FDA 21 CFR 177.2600 requirements for food contact applications and are odorless, tasteless, non-toxic, and resistant to bacterial growth through repeated cleaning and sterilization cycles.

One Call, Complete Solutions

Talk to our technical team about choosing the right silicone grade, fabrication options, and pricing for your project.

(314) 241-3673

Collection of orange silicone rubber O ring seals on a white backdrop.