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FKM X-Rings
Q4451 6.99mm Section 278.77mm Bore Quad Section FKM 70 Rubber X-Rings
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: 6.99mm
Inside Diameter: 278.77mm
Outside Diameter: 292.75mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4452 6.99mm Section 291.47mm Bore Quad Section FKM 70 Rubber X-Rings
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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Limited Availability
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Cross Section: 6.99mm
Inside Diameter: 291.47mm
Outside Diameter: 305.45mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4453 6.99mm Section 304.17mm Bore Quad Section FKM 70 Rubber X-Rings
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: 6.99mm
Inside Diameter: 304.17mm
Outside Diameter: 318.15mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4454 6.99mm Section 316.87mm Bore Quad Section FKM 70 Rubber X-Rings
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: 6.99mm
Inside Diameter: 316.87mm
Outside Diameter: 330.85mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4455 6.99mm Section 329.57mm Bore Quad Section FKM 70 Rubber X-Rings
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: 6.99mm
Inside Diameter: 329.57mm
Outside Diameter: 343.55mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4456 6.99mm Section 342.27mm Bore Quad Section FKM 70 Rubber X-Rings
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: 6.99mm
Inside Diameter: 342.27mm
Outside Diameter: 356.25mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4457 6.99mm Section 354.97mm Bore Quad Section FKM 70 Rubber X-Rings
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: 6.99mm
Inside Diameter: 354.97mm
Outside Diameter: 368.95mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4458 6.99mm Section 367.67mm Bore Quad Section FKM 70 Rubber X-Rings
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
Please Enquire
Cross Section: 6.99mm
Inside Diameter: 367.67mm
Outside Diameter: 381.65mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4459 6.99mm Section 380.37mm Bore Quad Section FKM 70 Rubber X-Rings
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: 6.99mm
Inside Diameter: 380.37mm
Outside Diameter: 394.35mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4460 6.99mm Section 393.07mm Bore Quad Section FKM 70 Rubber X-Rings
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: 6.99mm
Inside Diameter: 393.07mm
Outside Diameter: 407.05mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4461 6.99mm Section 405.26mm Bore Quad Section FKM 70 Rubber X-Rings
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: 6.99mm
Inside Diameter: 405.26mm
Outside Diameter: 419.24mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4462 6.99mm Section 417.96mm Bore Quad Section FKM 70 Rubber X-Rings
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: 6.99mm
Inside Diameter: 417.96mm
Outside Diameter: 431.94mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4463 6.99mm Section 430.66mm Bore Quad Section FKM 70 Rubber X-Rings
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: 6.99mm
Inside Diameter: 430.66mm
Outside Diameter: 444.64mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4464 6.99mm Section 443.36mm Bore Quad Section FKM 70 Rubber X-Rings
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: 6.99mm
Inside Diameter: 443.36mm
Outside Diameter: 457.34mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4465 6.99mm Section 456.06mm Bore Quad Section FKM 70 Rubber X-Rings
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: 6.99mm
Inside Diameter: 456.06mm
Outside Diameter: 470.04mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4466 6.99mm Section 468.76mm Bore Quad Section FKM 70 Rubber X-Rings
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: 6.99mm
Inside Diameter: 468.76mm
Outside Diameter: 482.74mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4467 6.99mm Section 481.46mm Bore Quad Section FKM 70 Rubber X-Rings
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: 6.99mm
Inside Diameter: 481.46mm
Outside Diameter: 495.44mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4468 6.99mm Section 494.16mm Bore Quad Section FKM 70 Rubber X-Rings
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: 6.99mm
Inside Diameter: 494.16mm
Outside Diameter: 508.14mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4469 6.99mm Section 506.86mm Bore Quad Section FKM 70 Rubber X-Rings
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: 6.99mm
Inside Diameter: 506.86mm
Outside Diameter: 520.84mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4470 6.99mm Section 532.26mm Bore Quad Section FKM 70 Rubber X-Rings
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
Please Enquire
Cross Section: 6.99mm
Inside Diameter: 532.26mm
Outside Diameter: 546.24mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4471 6.99mm Section 557.66mm Bore Quad Section FKM 70 Rubber X-Rings
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
Please Enquire
Cross Section: 6.99mm
Inside Diameter: 557.66mm
Outside Diameter: 571.64mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4472 6.99mm Section 582.68mm Bore Quad Section FKM 70 Rubber X-Rings
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: 6.99mm
Inside Diameter: 582.68mm
Outside Diameter: 596.66mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4473 6.99mm Section 608.08mm Bore Quad Section FKM 70 Rubber X-Rings
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: 6.99mm
Inside Diameter: 608.08mm
Outside Diameter: 622.06mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4474 6.99mm Section 633.48mm Bore Quad Section FKM 70 Rubber X-Rings
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: 6.99mm
Inside Diameter: 633.48mm
Outside Diameter: 647.46mm
Hardness: * 70 Shore (Most Common)
O-ring Lubricants?
O-ring Tools
Q4475 6.99mm Section 658.88mm Bore Quad Section FKM 70 Rubber X-Rings
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: 6.99mm
Inside Diameter: 658.88mm
Outside Diameter: 672.86mm
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]
