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FKM O-Rings
3mm Section 92mm 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: 3mm
Inside Diameter: 92mm
Outside Diameter: 98mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 96mm 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: 3mm
Inside Diameter: 96mm
Outside Diameter: 102mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 108mm 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: 4mm
Inside Diameter: 108mm
Outside Diameter: 116mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 148mm 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: 4mm
Inside Diameter: 148mm
Outside Diameter: 156mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 205mm Bore FKM 75 Shore Rubber O-Ring 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: 205mm
Outside Diameter: 213mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 221mm 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: 4mm
Inside Diameter: 221mm
Outside Diameter: 229mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 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: 4mm
Inside Diameter: 47mm
Outside Diameter: 55mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 72mm 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: 4mm
Inside Diameter: 72mm
Outside Diameter: 80mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 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: 4mm
Inside Diameter: 77mm
Outside Diameter: 85mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 79mm 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: 4mm
Inside Diameter: 79mm
Outside Diameter: 87mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 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: 4mm
Inside Diameter: 87mm
Outside Diameter: 95mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
5.7mm Section 52.5mm Bore FKM 75 Shore Rubber O-Ring 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: 5.7mm
Inside Diameter: 52.5mm
Outside Diameter: 63.9mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
5mm Section 29mm 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: 5mm
Inside Diameter: 29mm
Outside Diameter: 39mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
5mm Section 44mm 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: 5mm
Inside Diameter: 44mm
Outside Diameter: 54mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
5mm Section 50mm 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: 5mm
Inside Diameter: 50mm
Outside Diameter: 60mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
5mm Section 53mm 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: 5mm
Inside Diameter: 53mm
Outside Diameter: 63mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
5mm Section 55mm 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: 5mm
Inside Diameter: 55mm
Outside Diameter: 65mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
5mm Section 60mm 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: 5mm
Inside Diameter: 60mm
Outside Diameter: 70mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
5mm Section 61mm 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: 5mm
Inside Diameter: 61mm
Outside Diameter: 71mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
5mm Section 72mm 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: 5mm
Inside Diameter: 72mm
Outside Diameter: 82mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
5mm Section 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: 5mm
Inside Diameter: 77mm
Outside Diameter: 87mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS161 2.62mm Section 139.37mm 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: 139.37mm
Outside Diameter: 144.61mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS166 2.62mm Section 171.12mm 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: 171.12mm
Outside Diameter: 176.36mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS167 2.62mm Section 177.47mm 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: 2.62mm
Inside Diameter: 177.47mm
Outside Diameter: 182.71mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS246 3.53mm Section 113.89mm 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: 3.53mm
Inside Diameter: 113.89mm
Outside Diameter: 120.95mm
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]
