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FKM X-Rings
Q4386 5.33mm Section 430.66mm 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]...
Cross Section: 5.33mm
Inside Diameter: 430.66mm
Outside Diameter: 441.32mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4128 2.62mm Section 37.77mm 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]...
Cross Section: 2.62mm
Inside Diameter: 37.77mm
Outside Diameter: 43.01mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4205 3.53mm Section 10.69mm 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]...
Cross Section: 3.53mm
Inside Diameter: 10.69mm
Outside Diameter: 17.75mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4221 3.53mm Section 36.09mm Bore Quad Section FKM 70 Rubber X-Ring - Allow 2-3 Days
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]...
Cross Section: 3.53mm
Inside Diameter: 36.09mm
Outside Diameter: 43.15mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4226 3.53mm Section 50.39mm Bore Quad Section FKM 70 Rubber X-Ring - Allow 2-3 Days
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]...
Cross Section: 3.53mm
Inside Diameter: 50.39mm
Outside Diameter: 57.45mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4218 3.53mm Section 31.34mm 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]...
Cross Section: 3.53mm
Inside Diameter: 31.34mm
Outside Diameter: 38.4mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4312 5.33mm Section 15.24mm 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]...
Cross Section: 5.33mm
Inside Diameter: 15.24mm
Outside Diameter: 25.9mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4142 2.62mm Section 59.99mm 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]...
Cross Section: 2.62mm
Inside Diameter: 59.99mm
Outside Diameter: 65.23mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4212 3.53mm Section 21.82mm 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]...
Cross Section: 3.53mm
Inside Diameter: 21.82mm
Outside Diameter: 28.88mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4005 1.78mm Section 2.57mm 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]...
Cross Section: 1.78mm
Inside Diameter: 2.57mm
Outside Diameter: 6.13mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4020 1.78mm Section 21.95mm 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]...
Cross Section: 1.78mm
Inside Diameter: 21.95mm
Outside Diameter: 25.51mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4214 3.53mm Section 24.99mm 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]...
Cross Section: 3.53mm
Inside Diameter: 24.99mm
Outside Diameter: 32.05mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4131 2.62mm Section 42.52mm 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]...
Cross Section: 2.62mm
Inside Diameter: 42.52mm
Outside Diameter: 47.76mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4132 2.62mm Section 44.12mm Bore Quad Section FKM 70 Rubber X-Ring - Allow 2-3 Days
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]...
Cross Section: 2.62mm
Inside Diameter: 44.12mm
Outside Diameter: 49.36mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4224 3.53mm Section 44.04mm 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]...
Cross Section: 3.53mm
Inside Diameter: 44.04mm
Outside Diameter: 51.1mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4217 3.53mm 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]...
Cross Section: 3.53mm
Inside Diameter: 29.74mm
Outside Diameter: 36.8mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4318 5.33mm Section 24.77mm 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]...
Cross Section: 5.33mm
Inside Diameter: 24.77mm
Outside Diameter: 35.43mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4210 3.53mm Section 18.64mm Bore Quad Section FKM 70 Rubber X-Ring - Allow 2-3 Days
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]...
Cross Section: 3.53mm
Inside Diameter: 18.64mm
Outside Diameter: 25.7mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4327 5.33mm Section 43.82mm Bore Quad Section FKM 70 Rubber X-Ring - Allow 2-3 Days
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]...
Cross Section: 5.33mm
Inside Diameter: 43.82mm
Outside Diameter: 54.48mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4228 3.53mm Section 56.74mm Bore Quad Section FKM 70 Rubber X-Ring - Allow 2-3 Days
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]...
Cross Section: 3.53mm
Inside Diameter: 56.74mm
Outside Diameter: 63.8mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4326 5.33mm Section 40.64mm Bore Quad Section FKM 70 Rubber X-Ring - Allow 2-3 Days
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]...
Cross Section: 5.33mm
Inside Diameter: 40.64mm
Outside Diameter: 51.3mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4330 5.33mm Section 53.34mm 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]...
Cross Section: 5.33mm
Inside Diameter: 53.34mm
Outside Diameter: 64mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4338 5.33mm Section 78.74mm 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]...
Cross Section: 5.33mm
Inside Diameter: 78.74mm
Outside Diameter: 89.4mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4344 5.33mm Section 97.79mm 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]...
Cross Section: 5.33mm
Inside Diameter: 97.79mm
Outside Diameter: 108.45mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4231 3.53mm Section 66.27mm Bore Quad Section FKM 70 Rubber X-Ring - Allow 2-3 Days
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]...
Cross Section: 3.53mm
Inside Diameter: 66.27mm
Outside Diameter: 73.33mm
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]
