Building Materials

Auto Parts High Temperature Rubber X Ring Buna Fuel Resistant ISO9001 FDA Quad-Ring? Brand Seals
ORK pioneered the design and production of four-lobed seals with the Quad-Ring? Brand seal design. These seals are used today around the world for a wide variety of static and dynamic sealing applications.

Avoiding Spiral Twist

To minimize breakaway friction, an O-Ring groove must be wide enough to allow rolling or twisting of the seal. In the long stroke of a reciprocating seal application, this twisting action can strain and eventually tear the rubber, causing a failure mode known as spiral twist.

To prevent spiral twist, the Quad-Ring? Brand seal& acute;s four-lobed configuration is designed to withstand the distortion and extrusion often caused by high or pulsating pressure. To accommodate these forces, a Quad-Ring? Brand seal uses a narrower groove than a comparable O-Ring seal.



Longer Seal Life

Because less squeeze means less friction with the four-lobe design, seals last longer. Therefore, equipment in which the Quad-Ring? Brand seal is installed will operate longer and require less maintenance.

No Parting Line on Sealing Surface

Unlike O-Rings, where parting lines are on the sealing surface, Quad-Ring? Brand seals& acute; parting lines lie between the lobes, away from the sealing surface. This design eliminates the problems of leakage resulting from a parting line& acute;s irregular surface.


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Materials |
Materials?&
Temperature?Ranges | Fluid?Examples |
Suitable?With | Not?Suitable?With |
Nitrile?(NBR)
-40oC?to?120oC
-40oF?to?248oF | Petroleum?Oils
Hydraulic?Oils
Water | Brake?Fluids
Ketones
Phosphate?Esters
Strong?Acids?(H2S) |
Hydrogenated?Nitrile?(HNBR)
-40oC?to?150oC
-40oF?to?302oF | Petroleum?Oils
H2S?(10%)
Water | Polar?Solvents
Brake?Fluids
Strong?Acids |
Ethylene?Propylene(EPDM)
-50oC?to?150oC
-58oF?to?302oF | Brake?Fluids?
Water/?Hot?Water
Steam | Mineral?Oils
Ozone?at?High?Temperatures |
Fluoroelastomer?(FKM)
-20oC?to?200oC
-4oF?to?392oF | Petroleum?Oils
Silicone?Oils
Gasoline | Brake?Fluids
Ammonia?Gas
Steam |
Perfluoroelastomer?(FFKM)
-20oC?to?320oC
-4oF?to?608oF | Most?Media | Liquid?Sodium?&?Potassium
Fluorinated?Solvents?&
Refrigerants |
Silicone?(VMQ)
-70oC?to?220oC
-94oF?to?428oF | Vegetable?Oil
Water?
Ozone | Acids?&Alkalis
Hot?Water?&?Steam?(>120oC) |
Neoprene?(CR)
-40oC?to?120oC
-40oF?to?248oF | Ammonia
Refrigerants
Ozone | Aromatic?Hydrocarbons
Polar?Solvents
Toluene |
PTFE
-200oC?to?280oC
-148oF?to?536oF | Most?Media | Fluorine
Molten?Alkali?Metals
Strong?Oxidizing?Agents |
Polyurethane?(PU)
-40oC?to?90oC
-40oF?to?194oF | Most?Petroleum?Oils | Brake?Fluids
Hot?Water?
Steam |
PEEK?
-70oC?to?260oC
-94oF?to?500oF | Most?Media | Hydrochloric,?Nitric?&
Sulfuric?Acids |
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