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FKM O-Rings
2.5mm Section 97mm Bore 75 Shore FKM Rubber O-Rings
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: 2.5mm
Inside Diameter: 97mm
Outside Diameter: 102mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 64mm Bore FKM 75 Shore Rubber O-Rings
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: 4mm
Inside Diameter: 64mm
Outside Diameter: 72mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
5mm Section 12mm Bore FKM 75 Shore Rubber O-Rings
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: 5mm
Inside Diameter: 12mm
Outside Diameter: 22mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS844 3.53mm Section 71.44mm Bore FKM 75 Shore Rubber O-Rings
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: 3.53mm
Inside Diameter: 71.44mm
Outside Diameter: 78.5mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
1.6mm Section 48.1mm Bore FKM 75 Shore Rubber O-Rings Allow 2-3 Days
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: 1.6mm
Inside Diameter: 48.1mm
Outside Diameter: 51.3mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 98mm Bore 75 Shore FKM Rubber O-Rings
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: 2.5mm
Inside Diameter: 98mm
Outside Diameter: 103mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 91mm Bore FKM 75 Shore Rubber O-Rings
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: 3mm
Inside Diameter: 91mm
Outside Diameter: 97mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 99mm Bore 75 Shore FKM Rubber O-Rings
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: 2.5mm
Inside Diameter: 99mm
Outside Diameter: 104mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 65mm Bore FKM 75 Shore Rubber O-Rings
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: 4mm
Inside Diameter: 65mm
Outside Diameter: 73mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS233 3.53mm Section 72.62mm Bore FKM 75 Shore Rubber O-Rings
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: 3.53mm
Inside Diameter: 72.62mm
Outside Diameter: 79.68mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS845 3.53mm Section 73.02mm Bore FKM 75 Shore Rubber O-Rings
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: 3.53mm
Inside Diameter: 73.02mm
Outside Diameter: 80.08mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 92mm Bore FKM 75 Shore Rubber O-Rings
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: 3mm
Inside Diameter: 92mm
Outside Diameter: 98mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 100mm Bore 75 Shore FKM Rubber O-Rings
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: 2.5mm
Inside Diameter: 100mm
Outside Diameter: 105mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 66mm Bore FKM 75 Shore Rubber O-Rings
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: 4mm
Inside Diameter: 66mm
Outside Diameter: 74mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS155 2.62mm Section 101.27mm Bore FKM 75 Shore Rubber O-Rings
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: 101.27mm
Outside Diameter: 106.51mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS326 5.33mm Section 40.64mm Bore FKM 75 Shore Rubber O-Rings
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: 5.33mm
Inside Diameter: 40.64mm
Outside Diameter: 51.3mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 101mm Bore 75 Shore FKM Rubber O-Rings
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: 2.5mm
Inside Diameter: 101mm
Outside Diameter: 106mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 93mm Bore FKM 75 Shore Rubber O-Rings
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: 3mm
Inside Diameter: 93mm
Outside Diameter: 99mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 67mm Bore FKM 75 Shore Rubber O-Rings
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: 4mm
Inside Diameter: 67mm
Outside Diameter: 75mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS846 3.53mm Section 74.6mm Bore FKM 75 Shore Rubber O-Rings
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: 3.53mm
Inside Diameter: 74.6mm
Outside Diameter: 81.66mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 166mm Bore FKM 75 Shore Rubber O-Rings
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: 4mm
Inside Diameter: 166mm
Outside Diameter: 174mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 102mm Bore 75 Shore FKM Rubber O-Rings
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: 2.5mm
Inside Diameter: 102mm
Outside Diameter: 107mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS546 1.78mm Section 123.44mm Bore FKM 75 Shore Rubber O-Rings
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: 123.44mm
Outside Diameter: 127mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 103mm Bore 75 Shore FKM Rubber O-Rings Allow 2-3 Days
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: 2.5mm
Inside Diameter: 103mm
Outside Diameter: 108mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 94mm Bore FKM 75 Shore Rubber O-Rings
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: 3mm
Inside Diameter: 94mm
Outside Diameter: 100mm
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]
