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FKM O-Rings
BS326 5.33mm Section 40.64mm 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: 40.64mm
Outside Diameter: 51.3mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS548 1.78mm Section 129.4mm 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: 1.78mm
Inside Diameter: 129.4mm
Outside Diameter: 132.96mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS837 3.53mm Section 60.32mm 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: 60.32mm
Outside Diameter: 67.38mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS838 3.53mm Section 61.9mm 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: 61.9mm
Outside Diameter: 68.96mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
BS874 7mm Section 161.9mm 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: 7mm
Inside Diameter: 161.9mm
Outside Diameter: 175.9mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
1.5mm 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: 1.5mm
Inside Diameter: 100mm
Outside Diameter: 103mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
1.5mm 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: 1.5mm
Inside Diameter: 77mm
Outside Diameter: 80mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
1.5mm Section 84mm 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: 1.5mm
Inside Diameter: 84mm
Outside Diameter: 87mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
1.6mm Section 4.7mm 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: 1.6mm
Inside Diameter: 4.7mm
Outside Diameter: 7.9mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.4mm Section 57.6mm 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: 2.4mm
Inside Diameter: 57.6mm
Outside Diameter: 62.4mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.4mm Section 59.6mm 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: 2.4mm
Inside Diameter: 59.6mm
Outside Diameter: 64.4mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 109mm 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: 109mm
Outside Diameter: 114mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 110mm 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: 110mm
Outside Diameter: 115mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 126mm 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: 126mm
Outside Diameter: 131mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 37.5mm 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: 37.5mm
Outside Diameter: 42.5mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 58mm 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: 58mm
Outside Diameter: 63mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 59mm 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: 59mm
Outside Diameter: 64mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 71mm Bore 75 Shore FKM 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: 2.5mm
Inside Diameter: 71mm
Outside Diameter: 76mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 72mm 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: 72mm
Outside Diameter: 77mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 82mm 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: 82mm
Outside Diameter: 87mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 84mm 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: 84mm
Outside Diameter: 89mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 85mm 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: 85mm
Outside Diameter: 90mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 88mm Bore 75 Shore FKM 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: 2.5mm
Inside Diameter: 88mm
Outside Diameter: 93mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2.5mm Section 92mm 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: 92mm
Outside Diameter: 97mm
Hardness: 75 Shore
O-ring Lubricants?
O-ring Tools
2mm 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: 2mm
Inside Diameter: 87mm
Outside Diameter: 91mm
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]
