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FKM O-Rings
BS622 5.33mm Section 100mm 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: 5.33mm
Inside Diameter: 100mm
Outside Diameter: 110.66mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 197mm 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: 197mm
Outside Diameter: 203mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 150mm 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: 150mm
Outside Diameter: 158mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
5.7mm Section 84.3mm 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: 5.7mm
Inside Diameter: 84.3mm
Outside Diameter: 95.7mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
5mm Section 43mm 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: 43mm
Outside Diameter: 53mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 198mm 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: 198mm
Outside Diameter: 204mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 151mm 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: 4mm
Inside Diameter: 151mm
Outside Diameter: 159mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS345 5.33mm Section 100.97mm 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: 100.97mm
Outside Diameter: 111.63mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 199mm 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: 3mm
Inside Diameter: 199mm
Outside Diameter: 205mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS176 2.62mm Section 234.62mm 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: 2.62mm
Inside Diameter: 234.62mm
Outside Diameter: 239.86mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 199.5mm 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: 3mm
Inside Diameter: 199.5mm
Outside Diameter: 205.5mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 200mm 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: 200mm
Outside Diameter: 206mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 152mm 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: 152mm
Outside Diameter: 160mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 201mm 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: 3mm
Inside Diameter: 201mm
Outside Diameter: 207mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
5mm Section 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: 5mm
Inside Diameter: 44mm
Outside Diameter: 54mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS261 3.53mm Section 171.04mm 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: 171.04mm
Outside Diameter: 178.1mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 202mm 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: 3mm
Inside Diameter: 202mm
Outside Diameter: 208mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 154mm 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: 154mm
Outside Diameter: 162mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 203mm 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: 203mm
Outside Diameter: 209mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 155mm 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: 155mm
Outside Diameter: 163mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 204.5mm 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: 3mm
Inside Diameter: 204.5mm
Outside Diameter: 210.5mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 204mm 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: 204mm
Outside Diameter: 210mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS177 2.62mm Section 240.97mm 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: 240.97mm
Outside Diameter: 246.21mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS346 5.33mm Section 104.14mm 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: 104.14mm
Outside Diameter: 114.8mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 205mm 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: 205mm
Outside Diameter: 211mm
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]
