Glossary

Gasketing & Cut Parts Materials

Buna

is excellent in applications that require resistance to oils or aromatic fuels. (-40°F to 200°F)

Butyl

has good resistance to gas permeation, acids, alkalies and ozone at moderate temperatures. (0°F to 325°F)

Cloth Inserted Rubber

is used in air, hot and cold water, saturated and low pressure steam and hydraulic services. (-20°F to 170°F)

Compressed Non-Asbestos Materials

are a unique blend of sythetic fibers and rubber binders. These offer superior sealability and creep relaxation. These materials handle a wide variety of applications throughout a wide range of temperatures.

Cork

is used in oil and weather exposed applications. Cork accomodates to mold or flange growth, and will conform very well to minor surface irregularities. Cork is often combined with rubber to handle automotive and other assembly line applications. (Temperatures vary with fillers).

EPDM (Ethylene Propylene Diene Monomer)

has excellent ozone, chemical and ageing characteristics. EPDM features high tensile strength and high heat resistance and is good with low temperature properties. It's resistant to ketones, ester based solvents and some hydraulic oils. It can have poor resistance to petroleum based fluids and mineral oils.

Expanded PTFE (Teflon®)

is a sheet gasket material made from biaxially oriented expanded PTFE sheeting that is laminated to the required thickness. Expanded PTFE is much softer and more flexible than regular PTFE sheet and thus conforms easily to irregular and rough surfaces. EPTFE seals rough and irregular surfaces and is easier to compress while minimizing creep and cold flow.

Felt

is used for dust washers, isolation pads, weather strips, cushions, etc. and comes in a variety of thicknesses and varying grades.

Filled PTFE

is a modified Teflon®. The addition of fillers like glass fiber, carbon, bronze or graphite and others, in the form of powder mixed with the PTFE improves or modifies its properties depending upon the nature and quantity of filler. Filled PTFE is often not as strong and resilient as virgin PTFE. The filler limits the resistance to chemical agents and the electrical properties.

Flexible Graphite

is a unique form of natural graphite, combined with a core made of steel tang, steel wire, aluminum or Mylar®. This core gives the graphite material superior flexibility, while allowing it to handle extreme temperatures and pressures. This material also has excellent compressibility and permeability characteristics. (-328°F to 850°F {atmosphere} 1200° F {steam})

Neoprene

is often used for miscellaneous gaskets, pads, and strips. Neoprene has a greater resistance than most rubbers to oils, light and heat. (-20°F to 190°)

Poron®

is a high density, open-celled, sponge-like urethane which offers excellent compression set resistance, high energy absorption, and is useful in a wide variety of sealing and manufacturing applications.

Red Rubber

is suitable against hot and cold water, air and low to medium saturated steam pressure. (-40°F to 180 °F)

Silicone

is recommended for high temperature, acidic, caustic and dielectric applications. Silicone offers outstanding resistance to high and low temperatures, chemical deterioration, oils and ozone breakdown. (-120°F to 500°F)

Sponge

is used for gaskets, strips, vibration pads, air and water tight door seals, various cut parts, etc. Temperatures vary by type.

Thermo-Sil

is a textured fiberglass cloth. Its dielectric qualities are outstanding. Available in tape and sheet form. (Up to 1000°F)

Viton®

is unsurpassed for service in oils, fuels, solvents and many other chemicals. (-10°F to 500°F)

White FDA Rubber

is used in all food processing and by manufacturers of pharmaceutical and cosmetic products. (-25°F to 200°F)

Certification is available for materials which require military, federal, or AMS specifications.

Sealing Products

Adhesives

are typically used to temporarily or permanently bond a wide variety of surfaces such as metals, rubbers, plastics, etc.

Compression Packings

are designed to enhance and extend service life of your valves and pumps. Packings are available in many different styles and materials.

Expansion Joints

are designed to accommodate many different system requirements such as high temperatures, corrosive media, low flexing forces, large ductwork and compact dimensions.

Joint Sealant

is made with expanded PTFE (see above) and can be used when flange irregularities exist. This low cost, FDA and USDA approved, form-in-place gasket material also works just about everywhere in the pharmaceutical and food processing industries.

O-Rings

are generally used as dynamic seals for shafts and are available in many different sizes and materials.

Spiral Wounds and Metal Gaskets

are designed to handle high temperature and pressure applications. Metal Gaskets are generally jacketed or wound with steel guide rings, and come with many different fillers for use in the most critical applications.

Seals and Bearing Protectors

are designed to reduce, and even eliminate bearing wear due to contaminantes or loss of lubricants.

Topog-E®

is a synthetic material for use as boiler gaskets. It keeps a leak-tight seal at pressures up to 180psi and up to 380°F.

Whatever your application or specifications, IGI will provide the quality parts you need, and deliver them to you when you need them!