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FKM O-Rings
BS215 3.53mm Section 26.57mm 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: 26.57mm
Outside Diameter: 33.63mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS236 3.53mm Section 82.14mm Bore FKM 75 Shore Rubber O-Rings
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: 3.53mm
Inside Diameter: 82.14mm
Outside Diameter: 89.2mm
Hardness: 90 Shore
O-ring Lubricants?
O-ring Tools
1.5mm Section 56mm 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: 56mm
Outside Diameter: 59mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
1.5mm Section 57mm 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: 57mm
Outside Diameter: 60mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 36.5mm 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: 36.5mm
Outside Diameter: 41.5mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 36mm 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: 36mm
Outside Diameter: 41mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2mm Section 47mm 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: 47mm
Outside Diameter: 51mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 33.5mm 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: 33.5mm
Outside Diameter: 39.5mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm 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: 3mm
Inside Diameter: 33mm
Outside Diameter: 39mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 20mm 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: 20mm
Outside Diameter: 28mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS035 1.78mm Section 56.87mm 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: 1.78mm
Inside Diameter: 56.87mm
Outside Diameter: 60.43mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS128 2.62mm Section 37.77mm 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: 37.77mm
Outside Diameter: 43.01mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
1.5mm Section 58mm 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: 58mm
Outside Diameter: 61mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.4mm Section 39.6mm 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: 39.6mm
Outside Diameter: 44.4mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 37.5mm 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: 37.5mm
Outside Diameter: 42.5mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 37mm 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: 37mm
Outside Diameter: 42mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2mm 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: 2mm
Inside Diameter: 48mm
Outside Diameter: 52mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 34mm 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: 34mm
Outside Diameter: 40mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 21mm 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: 21mm
Outside Diameter: 29mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS129 2.62mm Section 39.35mm 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: 39.35mm
Outside Diameter: 44.59mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS216 3.53mm Section 28.17mm 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: 28.17mm
Outside Diameter: 35.23mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
1.5mm Section 59mm 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: 59mm
Outside Diameter: 62mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.4mm Section 41.6mm 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: 41.6mm
Outside Diameter: 46.4mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 38.5mm 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: 38.5mm
Outside Diameter: 43.5mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 38mm 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: 38mm
Outside Diameter: 43mm
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]
