Rubber Gasket – An Excellent Mechanical Seal Gasket

Rubber gasket creates a seal between two parts. It prevents dirt, gas, dust or fluid from leaking out of or into its joining.

Rubber gasket is a mechanical seal. It has excellent compressibility, resilience, expansibility, anti-permeability and easy assembly and disassembly. So rubber gasket is widely used in aerospace, petrochemical and architecture industries.

In addition, rubber gasket are available in five common materials including EPDM, NBR, neoprene, viton and silicone.

  • EPDM Gasket
  • NBR Gasket
  • Neoprene Gasket
  • Viton Gasket
  • Silicone Gasket
  • EPDM Gasket

    Three black EDPM rubber gaskets.

    EDPM gaskets

    EDPM Gasket With Heat and Ozone Resistance

    EPDM (Ethylene Propylene Diene Monomer) is an extremely durable synthetic rubber elastomer. EPDM offers excellent resistance to UV, heat, ozone, chemicals, animal and vegetable oils and harsh weather. Stable in low and high temperatures, this material has a service range of -40 °F to 212 °F and is intermittent to 275 °F.

    Because of its excellent performance, EPDM gasket is typically used for automotive seals and marine seals.

    Common specifications

    • Durometer Rating (hardness): 40, 60, 70
    • Temperature Range: -40 °F to 212 °F
    • Elongation: 350%
    • Tensile Strength: 1100 psi
    • Widths: 36", 48"
    • Gauge (thickness): 1/16", 1/8", 3/16", 1/4"
  • NBR Gasket

    There are many NBR gaskets on the blue background.

    NBR gaskets

    NBR Gasket – Suitable for Environments Affected by Oil and Fuel

    NBR (Nitrile-Butadiene Rubber), also known as Buna-N, is a copolymer of butadiene and acrylonitrile. This synthetic rubber material is resistant to various solvents, hydraulic fluids, animal and vegetable oils and aromatic fuels. In addition, The acrylonitrile content of nitrile sealing compounds varies considerably (18% to 50%) and influences the physical properties of the finished material. The higher the acrylonitrile content, the better the resistance to oil and fuel. Together with good elongation properties, as well as adequate resilience, tensile and compression set, these advantages make NBR gasket ideal for applications where resistance to oils, solvents and fuels.

    Common specifications

    • Durometer Rating (hardness): 60
    • Temperature Range: -30 °F to 200 °F
    • Elongation: 350%
    • Tensile Strength: 1000 psi
    • Finish: Plate
    • Widths: 36", 48"
    • Gauge (thickness): 1/32", 1/16", 3/32", 1/8", 3/16", 3/8", 1/4", 1/2"
  • Neoprene Gasket

    A black neoprene gasket on the white background.

    Neoprene gasket

    Neoprene Gasket – Moderately Resistant to Petroleum Products

    Neoprene is a synthetic rubber made of polymerized chloroprene. It is generally black in color with smooth finish.

    Neoprene is a flame-retardant material that can also resist the effects of oils, chemicals, oxygen and ozone. In addition, it offers moderate resistance to petroleum products. Because of its excellent properties, neoprene gasket is widely used in industrial and harsh environments.

    Common specifications

    • Durometer Rating (hardness): 40, 50, 60, 70, 80
    • Temperature Range: -20 °F to 180 °F
    • Elongation: 350% – 400%
    • Tensile Strength: 900 psi – 1000 psi
    • Finish: Plate
    • Widths: 36", 48", 72"
    • Gauge (thickness): 3/32", 1/16", 1/8", 3/16", 1/4", 1/2", 5/8", 3/4", 7/8", 1", 1 1/8", 1 1/4", 1 1/2", 2"
  • Viton Gasket

    There are four black viton gaskets on the white background.

    Viton gaskets

    Viton Gasket With Heat Resistance and Oil Resistance

    Viton, also known as fluororubber, is a fluorocarbon-based synthetic rubber that provide outstanding resistance to heat and oil as well as resistance to a wide range of concentrated acids bases. Additionally, it also has good tensile strength, resilience and low compression set.

    This material can perform optimally in the most extreme conditions. Viton has a maximum operating temperature from 400 °F (continuous) to 500 °F (intermittent).

    Common specifications

    • Durometer Rating (hardness): 75 (Shore A)
    • Temperature Range: -18 °F to 400 °F
    • Elongation: 200%
    • Tensile Strength: 1000 psi
    • Finish: Plate, Fabric, Smooth Paper
    • Width: 36"
    • Gauge (thickness): 1/32", 1/16", 3/32", 1/8", 3/16", 1/4"
  • Silicone Gasket

    There are many different colors, shapes and sizes of silicone rubber gaskets.

    Silicone gaskets

    Non-Toxic, Tasteless and Odorless Silicone Gasket/h2>

    Silicone is composed of polymerized siloxanes and it is an extremely soft and adaptable material.

    Silicone gasket boasts superior elastomeric properties at both high and low temperatures and is resistant to the effects of ozone, oxygen, aging, UV and extreme weather conditions. At the same time, Silicone gaskets provide extremely good electrical insulation properties. What's more, it is non-toxic, tasteless, odorless and chemically-inert which means they are a suitable choice for sanitary applications.

    Common specifications

    • Durometer Rating (hardness): 30, 40, 50, 60, 70, 80
    • Temperature Range: -94 °F to 392 °F
    • High Temperature: up to 500 °F
    • Elongation: 300%
    • Tensile Strength: 1100 psi
    • Finish: Plate
    • Widths: 36", 48"
    • Gauge (thickness): 1/32", 1/16", 3/32", 1/8", 3/16", 1/4"

Applications

  • Petrochemical. Gaskets for process equipment that are resistant to corrosive fluids and temperature fluctuations.
  • Aerospace. High-performance gaskets, such as ESD protection and EMI shielding.
  • Architecture. Such as ducts, door and window seals, wall cladding, expansion joints and curtain walls.
  • HVAC. Ducting and expansion joint gaskets for heating and ventilation systems.
  • Power & Utility. Gaskets for use in electrical equipment, compressorsand cable couplings.
  • Sanitary.
Rubber gaskets are used in duct system.

Rubber gasket for duct system

Fluorosilicone rubber gaskets has been the go-to seal material for jet fuel applications.

Rubber gaskets for aerospace

A person is installing a black rubber gasket at the drain duct.

Rubber gasket for duct

One hand is disassembling the rubber gasket on the pressure cooker.

Rubber gasket for power

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