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FKM O-Rings
3mm Section 48mm 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: 48mm
Outside Diameter: 54mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 31mm 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: 31mm
Outside Diameter: 39mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS824 3.53mm Section 39.7mm 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: 39.7mm
Outside Diameter: 46.76mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.4mm Section 61.6mm 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: 2.4mm
Inside Diameter: 61.6mm
Outside Diameter: 66.4mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 57mm 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: 57mm
Outside Diameter: 62mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 58mm 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: 58mm
Outside Diameter: 63mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 49mm 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: 49mm
Outside Diameter: 55mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 32mm 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: 32mm
Outside Diameter: 40mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS140 2.62mm Section 56.82mm 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: 56.82mm
Outside Diameter: 62.06mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS312 5.33mm Section 15.24mm 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: 15.24mm
Outside Diameter: 25.9mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 59mm 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: 59mm
Outside Diameter: 64mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 49.5mm 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: 49.5mm
Outside Diameter: 55.5mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 50mm 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: 50mm
Outside Diameter: 56mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS141 2.62mm Section 58.42mm 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: 58.42mm
Outside Diameter: 63.66mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS223 3.53mm Section 40.87mm 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: 40.87mm
Outside Diameter: 47.93mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS825 3.53mm Section 41.28mm 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: 41.28mm
Outside Diameter: 48.34mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 60mm 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: 60mm
Outside Diameter: 65mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 61mm 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: 61mm
Outside Diameter: 66mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2mm Section 70mm 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: 2mm
Inside Diameter: 70mm
Outside Diameter: 74mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 50.5mm 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: 50.5mm
Outside Diameter: 56.5mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 51mm 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: 51mm
Outside Diameter: 57mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 33mm 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: 33mm
Outside Diameter: 41mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
1.5mm Section 75mm 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: 1.5mm
Inside Diameter: 75mm
Outside Diameter: 78mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.4mm Section 64.6mm 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: 2.4mm
Inside Diameter: 64.6mm
Outside Diameter: 69.4mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 62mm 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: 62mm
Outside Diameter: 67mm
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]
