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FKM X-Rings
Q4627 7mm Section 159.5mm Bore Quad Section FKM 70 Rubber X-Ring
FKM Rubber X Rings with 70 Shore Hardness: The four-lobed design of quad rings provides twice the sealing surface in comparison to a standard O-Ring. The double-seal action requires less [show more]...
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Cross Section: 7mm
Inside Diameter: 159.5mm
Outside Diameter: 173.5mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4901 1.42mm Section 4.7mm Bore Quad Section FKM 70 Rubber X-Ring
FKM Rubber X Rings with 70 Shore Hardness: The four-lobed design of quad rings provides twice the sealing surface in comparison to a standard O-Ring. The double-seal action requires less [show more]...
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Cross Section: 1.42mm
Inside Diameter: 4.7mm
Outside Diameter: 7.54mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4902 1.63mm Section 6.07mm Bore Quad Section FKM 70 Rubber X-Ring
FKM Rubber X Rings with 70 Shore Hardness: The four-lobed design of quad rings provides twice the sealing surface in comparison to a standard O-Ring. The double-seal action requires less [show more]...
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Cross Section: 1.63mm
Inside Diameter: 6.07mm
Outside Diameter: 9.33mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4903 1.63mm Section 7.65mm Bore Quad Section FKM 70 Rubber X-Ring
FKM Rubber X Rings with 70 Shore Hardness: The four-lobed design of quad rings provides twice the sealing surface in comparison to a standard O-Ring. The double-seal action requires less [show more]...
Limited Stock
Limited Availability
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Cross Section: 1.63mm
Inside Diameter: 7.65mm
Outside Diameter: 10.91mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4904 1.83mm Section 8.92mm Bore Quad Section FKM 70 Rubber X-Ring
FKM Rubber X Rings with 70 Shore Hardness: The four-lobed design of quad rings provides twice the sealing surface in comparison to a standard O-Ring. The double-seal action requires less [show more]...
Limited Stock
Limited Availability
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Cross Section: 1.83mm
Inside Diameter: 8.92mm
Outside Diameter: 12.58mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4905 1.83mm Section 10.52mm Bore Quad Section FKM 70 Rubber X-Ring
FKM Rubber X Rings with 70 Shore Hardness: The four-lobed design of quad rings provides twice the sealing surface in comparison to a standard O-Ring. The double-seal action requires less [show more]...
Limited Stock
Limited Availability
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Cross Section: 1.83mm
Inside Diameter: 10.52mm
Outside Diameter: 14.18mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4906 1.98mm Section 11.89mm Bore Quad Section FKM 70 Rubber X-Ring
FKM Rubber X Rings with 70 Shore Hardness: The four-lobed design of quad rings provides twice the sealing surface in comparison to a standard O-Ring. The double-seal action requires less [show more]...
Limited Stock
Limited Availability
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Cross Section: 1.98mm
Inside Diameter: 11.89mm
Outside Diameter: 15.85mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4907 2.08mm Section 13.46mm Bore Quad Section FKM 70 Rubber X-Ring
FKM Rubber X Rings with 70 Shore Hardness: The four-lobed design of quad rings provides twice the sealing surface in comparison to a standard O-Ring. The double-seal action requires less [show more]...
Limited Stock
Limited Availability
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Cross Section: 2.08mm
Inside Diameter: 13.46mm
Outside Diameter: 17.62mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4908 2.21mm Section 16.36mm Bore Quad Section FKM 70 Rubber X-Ring
FKM Rubber X Rings with 70 Shore Hardness: The four-lobed design of quad rings provides twice the sealing surface in comparison to a standard O-Ring. The double-seal action requires less [show more]...
Limited Stock
Limited Availability
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Cross Section: 2.21mm
Inside Diameter: 16.36mm
Outside Diameter: 20.78mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4909 2.46mm Section 17.93mm Bore Quad Section FKM 70 Rubber X-Ring
FKM Rubber X Rings with 70 Shore Hardness: The four-lobed design of quad rings provides twice the sealing surface in comparison to a standard O-Ring. The double-seal action requires less [show more]...
Limited Stock
Limited Availability
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Cross Section: 2.46mm
Inside Diameter: 17.93mm
Outside Diameter: 22.85mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4910 2.46mm Section 19.18mm Bore Quad Section FKM 70 Rubber X-Ring
FKM Rubber X Rings with 70 Shore Hardness: The four-lobed design of quad rings provides twice the sealing surface in comparison to a standard O-Ring. The double-seal action requires less [show more]...
Limited Stock
Limited Availability
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Cross Section: 2.46mm
Inside Diameter: 19.18mm
Outside Diameter: 24.1mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4911 2.95mm Section 21.92mm Bore Quad Section FKM 70 Rubber X-Ring
FKM Rubber X Rings with 70 Shore Hardness: The four-lobed design of quad rings provides twice the sealing surface in comparison to a standard O-Ring. The double-seal action requires less [show more]...
Limited Stock
Limited Availability
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Cross Section: 2.95mm
Inside Diameter: 21.92mm
Outside Diameter: 27.82mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4912 2.95mm Section 23.47mm Bore Quad Section FKM 70 Rubber X-Ring
FKM Rubber X Rings with 70 Shore Hardness: The four-lobed design of quad rings provides twice the sealing surface in comparison to a standard O-Ring. The double-seal action requires less [show more]...
Limited Stock
Limited Availability
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Cross Section: 2.95mm
Inside Diameter: 23.47mm
Outside Diameter: 29.37mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4913 2.95mm Section 25.04mm Bore Quad Section FKM 70 Rubber X-Ring
FKM Rubber X Rings with 70 Shore Hardness: The four-lobed design of quad rings provides twice the sealing surface in comparison to a standard O-Ring. The double-seal action requires less [show more]...
Limited Stock
Limited Availability
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Cross Section: 2.95mm
Inside Diameter: 25.04mm
Outside Diameter: 30.94mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4914 2.95mm Section 26.59mm Bore Quad Section FKM 70 Rubber X-Ring
FKM Rubber X Rings with 70 Shore Hardness: The four-lobed design of quad rings provides twice the sealing surface in comparison to a standard O-Ring. The double-seal action requires less [show more]...
Limited Stock
Limited Availability
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Cross Section: 2.95mm
Inside Diameter: 26.59mm
Outside Diameter: 32.49mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4916 2.95mm Section 29.74mm Bore Quad Section FKM 70 Rubber X-Ring
FKM Rubber X Rings with 70 Shore Hardness: The four-lobed design of quad rings provides twice the sealing surface in comparison to a standard O-Ring. The double-seal action requires less [show more]...
Limited Stock
Limited Availability
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Cross Section: 2.95mm
Inside Diameter: 29.74mm
Outside Diameter: 35.64mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4918 2.95mm Section 34.42mm Bore Quad Section FKM 70 Rubber X-Ring
FKM Rubber X Rings with 70 Shore Hardness: The four-lobed design of quad rings provides twice the sealing surface in comparison to a standard O-Ring. The double-seal action requires less [show more]...
Limited Stock
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Cross Section: 2.95mm
Inside Diameter: 34.42mm
Outside Diameter: 40.32mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4920 3mm Section 37.47mm Bore Quad Section FKM 70 Rubber X-Ring
FKM Rubber X Rings with 70 Shore Hardness: The four-lobed design of quad rings provides twice the sealing surface in comparison to a standard O-Ring. The double-seal action requires less [show more]...
Limited Stock
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Cross Section: 3mm
Inside Diameter: 37.47mm
Outside Diameter: 43.47mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4924 3mm Section 43.69mm Bore Quad Section FKM 70 Rubber X-Ring
FKM Rubber X Rings with 70 Shore Hardness: The four-lobed design of quad rings provides twice the sealing surface in comparison to a standard O-Ring. The double-seal action requires less [show more]...
Limited Stock
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Cross Section: 3mm
Inside Diameter: 43.69mm
Outside Diameter: 49.69mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4928 3mm Section 53.09mm Bore Quad Section FKM 70 Rubber X-Ring
FKM Rubber X Rings with 70 Shore Hardness: The four-lobed design of quad rings provides twice the sealing surface in comparison to a standard O-Ring. The double-seal action requires less [show more]...
Limited Stock
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Cross Section: 3mm
Inside Diameter: 53.09mm
Outside Diameter: 59.09mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4932 3mm Section 59.36mm Bore Quad Section FKM 70 Rubber X-Ring
FKM Rubber X Rings with 70 Shore Hardness: The four-lobed design of quad rings provides twice the sealing surface in comparison to a standard O-Ring. The double-seal action requires less [show more]...
Limited Stock
Limited Availability
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Cross Section: 3mm
Inside Diameter: 59.36mm
Outside Diameter: 65.36mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
FKM X Rings
Simply Bearings is a market-leading supplier of replacement FKM X rings for a huge variety of industrial equipment. Our modern warehouse is stocked with a wide selection of differently sized and rated X rings - a selection that is so large that we are confident that we can provide you with the precise X ring to meet any of your requirements.
The four-lobed design of quad rings provides twice the sealing surface in comparison to a standard O-Ring. The double-seal action requires less compression to maintain an effective seal. This reduced compression results in less friction, longer seal life and a lower risk of twisting
X rings demonstrate a very high degree of chemical resistance. They can safely seal tens of thousands of PSI. Operating temperatures extend from -30c to +120c, but specific O rings have different ratings.
FKM, a form of synthetic rubber, is particularly resistant to hydrocarbons, making it an excellent rubber to use for oil seals. FKM oil seals, FKM tubing and hoses lined with FKM are commonly found in vehicles and fuel transportation applications. Some FKM oil seals are compatible even with biodiesel, which is a particularly unstable, oxidising and acidic fuel. FKM is, however, generally incompatible with ketone-based chemicals, including acetone, and certain organic acids, such as acetic acid.
FKM X rings can be used as an alternative to the Buna-N seals present in the automobile engine variable timing units in BMW's vehicles. FKM provides similar functional properties to Buna-N, but with the additional benefit of greater chemical and temperature resistances.
For more information on the specific chemical resistance ratings of any of the FKM X rings that we stock, simply click on the link for the relevant product entitled ""Chemical Resistance Table. You will be presented with a long and searchable list of chemicals and information about how they interact with that specific X ring. Use of the X ring with each chemical is rated from 1 for Excellent to * for Totally Unsuitable to ensure that you find the correct product to get the job done safely.






Chemical Resistance Table [Click Here]
