Size and Dimension Handbook

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Standard Compounds Fluid & Compatibility Table

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Ethylene Prophylene (EPR)

Buna N (Nitrile)




Metric Sizes



All Compounds

Any Shape or Size

FDA Approved Material

Medical Grade

RFI/EMI Shielding



PSA Backing


Kalrez – Dupont


White Viton

White Silicone

Teflon Encapsulated

CV 75

High Purity Viton (HPV)

High Temp. Silicone


Spliced O-Rings

Cord Stock

Lathe Cuts

Seal Kits

quad Rings

Rubber Metal Rings

Back-Up Rings

Custom Molded Shapes

Door Gaskets

Lip Seal Hybrid Seals

Most Common O-Ring Elastomers

NITRILE (Buna N) – Nitrile formulations exhibit good mechanical and physical properties. They are resistant to most non-aromatic petroleum-based fluids and gases, and have been used in most industrial, automotive, and off-the-road equipment for many years. Their usable temperature range is -65°F to +225°F.

FLUROCARBON (Viton¹ and Fluorel²) – These versatile elastomers have excellent mechanical and physical properties, and outstanding resistance to aromatic fuels, high temperature synthetic lubricants, and many of the new fire resistant industrial fluids. They can withstand prolonged exposure to temperatures of 450°F in fluid service and limited exposure to much higher temperatures.

CHLOROPRENE (Neoprene¹) – These elastomers have moderate resistance to petroleum based oils over a temperature range of -65°F to +250°F, and good resistance to weathering and ozone.

SILICONE – Silicone materials are recommended for applications requiring a wide temperature range and good dry heat resistance. Their temperature range is from -80°F to +450°F, the widest of any commercial elastomer. They also have good weathering and ozone resistance, and moderate oil resistance.

ETHYLENE PROPYLENE – These elastomers first came into prominent usage as seals for Skydrol fluids used in commercial aircraft hydraulic systems. Ethylene propylene compounds have grown in importance over the past few years, and now are used in systems involving hot water, steam, and phosphate ester fluids. They are also resistant to mild acids, alkalis, and ozone. Their effective temperature range is -65°F to +300°F.

FLUOROSILICONE – These elastomers have outstanding aging properties over a temperature range of -100°F to +400°F. In addition to excellent heat and low temperature flexibility, these rubbers have very good oil and fuel resistance, low compression set and good electrical properties. Also excellent resistance to ozone and weathering.

POLYURETHANE – Exhibit outstanding toughness and abrasion resistance. Good resistance to petroleum oils, hydrocarbon fuels, oxygen, ozone and weathering over a temperature range of -40°F to +200°F. Can be manufactured either from millable gums or cast from liquid versions.