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FKM O-Rings
BS024 1.78mm Section 28.3mm Bore FKM 75 Shore Rubber O-Ring
FKM Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 1.78mm
Inside Diameter: 28.3mm
Outside Diameter: 31.86mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS025 1.78mm Section 29.87mm Bore FKM 75 Shore Rubber O-Ring
FKM Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 1.78mm
Inside Diameter: 29.87mm
Outside Diameter: 33.43mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS026 1.78mm Section 31.47mm Bore FKM 75 Shore Rubber O-Ring
FKM Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 1.78mm
Inside Diameter: 31.47mm
Outside Diameter: 35.03mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS026 1.78mm Section 31.47mm Bore FKM 75 Shore Rubber O-Ring
Viton Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 1.78mm
Inside Diameter: 31.47mm
Outside Diameter: 35.03mm
Hardness: 90 Shore
O-ring Lubricants?
O-ring Tools
BS027 1.78mm Section 33.05mm Bore FKM 75 Shore Rubber O-Ring
FKM Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 1.78mm
Inside Diameter: 33.05mm
Outside Diameter: 36.61mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS028 1.78mm Section 34.65mm Bore FKM 75 Shore Rubber O-Ring
FKM Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 1.78mm
Inside Diameter: 34.65mm
Outside Diameter: 38.21mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS029 1.78mm Section 37.82mm Bore FKM 75 Shore Rubber O-Ring
FKM Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 1.78mm
Inside Diameter: 37.82mm
Outside Diameter: 41.38mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS030 1.78mm Section 41mm Bore FKM 75 Shore Rubber O-Ring
FKM Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 1.78mm
Inside Diameter: 41mm
Outside Diameter: 44.56mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS031 1.78mm Section 44.17mm Bore FKM 75 Shore Rubber O-Ring
FKM Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 1.78mm
Inside Diameter: 44.17mm
Outside Diameter: 47.73mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS032 1.78mm Section 47.35mm Bore FKM 75 Shore Rubber O-Ring
FKM Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 1.78mm
Inside Diameter: 47.35mm
Outside Diameter: 50.91mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS033 1.78mm Section 50.52mm Bore FKM 75 Shore Rubber O-Ring
FKM Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 1.78mm
Inside Diameter: 50.52mm
Outside Diameter: 54.08mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS034 1.78mm Section 53.7mm Bore FKM 75 Shore Rubber O-Ring
FKM Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 1.78mm
Inside Diameter: 53.7mm
Outside Diameter: 57.26mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS035 1.78mm Section 56.87mm Bore FKM 75 Shore Rubber O-Ring
FKM Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 1.78mm
Inside Diameter: 56.87mm
Outside Diameter: 60.43mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS036 1.78mm Section 60.05mm Bore FKM 75 Shore Rubber O-Ring
FKM Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 1.78mm
Inside Diameter: 60.05mm
Outside Diameter: 63.61mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS040 1.78mm Section 72.75mm Bore FKM 75 Shore Rubber O-Ring
FKM Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 1.78mm
Inside Diameter: 72.75mm
Outside Diameter: 76.31mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS102 2.62mm Section 1.25mm Bore FKM 75 Shore Rubber O-Ring
FKM Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 2.62mm
Inside Diameter: 1.25mm
Outside Diameter: 6.49mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS103 2.62mm Section 2.06mm Bore FKM 75 Shore Rubber O-Ring
FKM Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 2.62mm
Inside Diameter: 2.06mm
Outside Diameter: 7.3mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS104 2.62mm Section 2.85mm Bore FKM 75 Shore Rubber O-Ring
FKM Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 2.62mm
Inside Diameter: 2.85mm
Outside Diameter: 8.09mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS105 2.62mm Section 3.63mm Bore FKM 75 Shore Rubber O-Ring
FKM Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 2.62mm
Inside Diameter: 3.63mm
Outside Diameter: 8.87mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS106 2.62mm Section 4.42mm Bore FKM 75 Shore Rubber O-Ring
FKM Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 2.62mm
Inside Diameter: 4.42mm
Outside Diameter: 9.66mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS107 2.62mm Section 5.23mm Bore FKM 75 Shore Rubber O-Ring
FKM Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 2.62mm
Inside Diameter: 5.23mm
Outside Diameter: 10.47mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS108 2.62mm Section 6.02mm Bore FKM 75 Shore Rubber O-Ring
FKM Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 2.62mm
Inside Diameter: 6.02mm
Outside Diameter: 11.26mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS109 2.62mm Section 7.6mm Bore FKM 75 Shore Rubber O-Ring
FKM Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 2.62mm
Inside Diameter: 7.6mm
Outside Diameter: 12.84mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS110 2.62mm Section 9.2mm Bore FKM 75 Shore Rubber O-Ring
FKM Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 2.62mm
Inside Diameter: 9.2mm
Outside Diameter: 14.44mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS111 2.62mm Section 10.77mm Bore FKM 75 Shore Rubber O-Ring
FKM Rubber O Rings: Widely used and the simplest types of seal they are found everywhere from plumbing installations to the space shuttle, they are common in engines and gearboxes, garden [show more]... |
Cross Section: 2.62mm
Inside Diameter: 10.77mm
Outside Diameter: 16.01mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
FKM O Rings
Simply Bearings is a market-leading supplier of replacement FKM O rings for a huge variety of industrial equipment. Our modern warehouse is stocked with a wide selection of differently sized and rated O rings - a selection that is so large that we are confident that we can provide you with the precise O ring to meet any of your requirements.
O rings are perhaps the most widely used and certainly the simplest form of seal, which is unsurprising given that they are largely inexpensive, reliable and easy to mount. They are found everywhere from pumps, engines and gearboxes to SCUBA diving gear and NASA's space shuttles. O rings can be used as shaft seals, enabling both linear and rotary movement in dynamic applications - for example, rotating pump shafts and hydraulic cylinder pistons - but it can also be used in static applications as face-to-face seals.
O 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 O 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 O 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 O ring. Use of the O 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]
Tolerance Table [Click Here]
