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FKM O-Rings
3mm Section 173mm 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: 173mm
Outside Diameter: 179mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 184mm 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: 184mm
Outside Diameter: 190mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 203mm 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: 203mm
Outside Diameter: 209mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 210mm 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: 210mm
Outside Diameter: 216mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 125mm 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: 125mm
Outside Diameter: 133mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 140mm 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: 140mm
Outside Diameter: 148mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 86mm 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: 86mm
Outside Diameter: 94mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
4mm Section 99mm 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: 99mm
Outside Diameter: 107mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
5.7mm Section 329.3mm 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: 329.3mm
Outside Diameter: 340.7mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
5.7mm Section 54.3mm 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: 54.3mm
Outside Diameter: 65.7mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
5.7mm Section 62mm 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: 62mm
Outside Diameter: 73.4mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
5mm Section 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: 5mm
Inside Diameter: 37mm
Outside Diameter: 47mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
5mm Section 70mm 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: 70mm
Outside Diameter: 80mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
5mm Section 85mm 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: 85mm
Outside Diameter: 95mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS176 2.62mm Section 234.62mm 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: 234.62mm
Outside Diameter: 239.86mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS262 3.53mm Section 177.4mm 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: 177.4mm
Outside Diameter: 184.46mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS273 3.53mm Section 247.25mm 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: 247.25mm
Outside Diameter: 254.31mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS335 5.33mm Section 69.22mm 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: 5.33mm
Inside Diameter: 69.22mm
Outside Diameter: 79.88mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS619 5.33mm Section 74.63mm 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: 5.33mm
Inside Diameter: 74.63mm
Outside Diameter: 85.29mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS620 5.33mm Section 79.77mm 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: 5.33mm
Inside Diameter: 79.77mm
Outside Diameter: 90.43mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 138mm Bore 75 Shore FKM 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: 2.5mm
Inside Diameter: 138mm
Outside Diameter: 143mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2mm Section 100mm 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: 2mm
Inside Diameter: 100mm
Outside Diameter: 104mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 116mm 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: 3mm
Inside Diameter: 116mm
Outside Diameter: 122mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 140mm 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: 140mm
Outside Diameter: 146mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
3mm Section 156mm 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: 156mm
Outside Diameter: 162mm
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]
