X-Rings (Quad-Rings) at NewDealSeals
X-Rings, also known as Quad Rings®, are revolutionizing the world of sealing technology. These innovative sealing components offer superior performance and advantages that set them apart from traditional O-rings. On this page, we’ll explore the versatility and benefits of X-Rings, making them a top choice for a wide range of applications.
What Are X-Rings (Quad Rings)?
X-Rings, often referred to as Quad Rings® due to their unique four-lip design, are specialized sealing rings that provide at least four sealing surfaces. This distinct structure unlocks a range of advantages that make them a formidable alternative to O-rings.
How do X-Rings work?
An X-ring is an elastic part placed between two parts and then squeezed to fill up the gap between the two parts. An X-ring has at least four sealing surfaces. When an X- ring is installed, the X-ring is slightly compressed to seal at low pressures. When an X- ring is pressurised, the X-ring is forced to “flow” within the groove toward the clearance gap. The small area between the sealing surfaces can be filled with lubricant to reduce friction and increase lifetime in dynamic applications.
Advantages
- Higher sealing capacity in comparison to O-rings
- Stable sealing solution with high resistance to rolling in dynamic applications
- High resistance to spiral failure
- The four lips on a X-ring create a groove for lubrication. This reduces friction in dynamic applications.
- Less compression force is required due to the multi-lobed design. Therefor less squeeze is required, reducing friction and wear.
Technical Specifications
Movement type
Static, Light dynamic rotating/reciprocating
Available sizes
Reciprocating: ≤ 0.5 m/s
Rotating: ≤ 2.0 m/s
Available sizes
Any size available upon request
Pressure range without Back-Up ring
Static:≤ 50 bar
Reciprocating:≤ 50 bar
Rotating:≤ 50 bar
Pressure range with Back-Up ring
Static:≤ 400 bar
Reciprocating:≤ 300 bar
Rotating:≤ 150 bar
Temperature range
NBR: -40° to +108° C
EPDM: -55° to +155° C
FKM: -25° to +204° C
Available materials
NBR, EPDM, FKM, CR, FVMQ, HNBR, FFKM, PU, VMQ
Available compliances
KTW, USP, NSF 51 61, WRC, WRAS, FDA, R67 01
Common X-Ring types
Type Nitrile (NBR)
NBR X-Rings have good resistance to minerla oils, greases and water up to 100 °C. NBR is not compatible with most solvents, strong acids, fuels with high aromatic content and ozone/weathering.
Type EPDM
EPDM X-Rings have good resistance to hot water, hydraulic fluids, silicone oils and silicone greases. EPDM is not compatible with mineral oils, mineral greases and hydrocarbons.
Type Viton® FKM
FKM X-Rings have excellent resistance to most chemicals, mineral oils, greases, fuels, ozone and aromatic hydrocarbons. FKM is not compatible with organic acids that have low molecular weight and glycol based brake fluids.
Materials
| Rubber Material | Characteristics | Specifics | Applications |
|---|---|---|---|
| NBR, XNBR, Nitril Krynac®, Nipol® |
Temperature range:-40° to +108° C |
|
O-rings, Rubber Moulded Parts, light dynamic seals mineral based oil applications. Gaskets in oil and gas applications. General purpose sealing solutions. |
| FKM, Fluorocarbon Viton®, DAI-EL®, Dyneon®, Tecnoflon® |
Temperature range:-25° to +204° C |
|
O-rings and light dynamic seals in fuel applications. General purposes sealing solutions where high chemical resistance is required. |
| FFKM, Perfluoroelastomer Fluorezi®, Chemraz®, Isolast®, Parofluor®, Simriz® |
Temperature range:-30° to +325° C Chemical resistance:••••• |
|
O-rings and rubber moulded parts where extreme temperature and chemical resistance is required, like chemical processing and high temperature fuel applications. |
| EPM, EPDM, Ethylenepropylene Buna EP®, Keltan®, Nordel®, Vistalon® |
Temperature range:-55° to +150° C |
|
Outdoor sealing applications. O-rings and Gaskets in drinking water applications. |
| VMQ, PVMQ, Silicone KE®, Silastic®, Silplus®, Tufel® |
Temperature range:-54° to +232° C |
|
Heat exchanger Gaskets, Hollow O-rings for low pressure applications. |
| FVMQ, Fluorosilicone FE®, Silastic LS® |
Temperature range:-55° to +180° C |
|
Diesel turbocharger and charge air cool hoses, exhaust hangers, wire and cable insulation. |
| FEPM, Tetrafluorethylene Propylene Aflas®, Dyneon BRF®, Viton VTR® |
Temperature range:–20° to 204° C
|
|
O-rings in cooling water applications. Sealing solutions in high temperature steam applications. |
| HNBR, Hydronated Nitrile Therban®, Zetpol® |
Temperature range:-30° to +150° C Chemical resistance:••••• |
|
O-rings, hoses and membranes which require a high abrasion resistance. |
| PU, Polyurethane Adiprene®, Estane®, Millathane®, Morthane®, Pellethane®, Texin®, Vibrathane® |
Temperature range:-50° to +108° C Chemical resistance:•••••
|
|
O-rings and shaft seals in high pressure applications. Sealing solutions in hydraulic cylinders and CO2 Firearms. |
Alternatives for X-Rings (Quad-Rings)
CONTACT FORM
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NewDealSeals B.V.
+31 (0) 226 362 233
Boezemschop 8, Breekland, 1724 BJ Oudkarspel, The Netherlands