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Part # MCM83248/1-116
The MCM83248 series o-rings are fuel proof FAA-PMA replacement o-rings. Only McFarlane has FAA approval to replace the old, less fuel resistant nitrile (MS series) and synthetic rubber (NAS series) o-rings with the latest fuel proof fluorocarbon o-rings! Flurocarbon rubber is commonly known as Viton. It is an advanced rubber that has extremely good fuel and heat resistance and is ideally suited for aircraft fuel system applications.
If you are looking for standard non FAA-PMA M83248 series o-rings, go to O-Rings and Gaskets.
McFarlane also has complete fuel selector, fuel shut off valve, and fuel strainer seal kits with all required seals and gaskets. Go to Fuel Selector/Shut-Off Valve Seal Kits or Fuel Strainer Parts to find the kit for your aircraft.
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| Make | Model | Start S/N | End S/N | Quantity Per Aircraft | Location | Eligibility Chart |
|---|---|---|---|---|---|---|
| Cessna 170B | 170B | S/N 20286 – 27169 | 27169 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 172 | 172 | S/N 28000 – 46754 | 46754 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna 172A | 172A | S/N 46755 – 47746 | 47746 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna 172B | 172B | S/N 17247747 – 17248734 | 17248734 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna 172C | 172C | S/N 17248735 – 17249544 | 17249544 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna 172D | 172D | S/N 17249545 – 17250572 | 17250572 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna 172E | 172E | S/N 17250573 – 17251822 | 17251822 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna 172F (T-41A) | 172F (T-41A) | S/N 17251823 – 17253392 | 17253392 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna 172G | 172G | S/N 17253393 – 17254892 | 17254892 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna 172H (T-41A) | 172H (T-41A) | S/N 17254893 – 17256512 | 17256512 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna 172I | 172I | S/N 17256513 – 17257161 | 17257161 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna 172K | 172K | S/N 17257162 – 17259223 | 17259223 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna 172L | 172L | S/N 17259224 – 17260758 | 17260758 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna 172M | 172M | S/N 17260759 – 17263458 | 17263458 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 172M | 172M | S/N 17263459 – 17267584 | 17267584 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna F172D | F172D | S/N F172-0001 – F172-0018 | F172-0018 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna F172E | F172E | S/N F172-0019 – F172-0085 | F172-0085 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna F172F | F172F | S/N F172-0086 – F172-0179 | F172-0179 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna F172G | F172G | S/N F172-0180 – F172-0319 | F172-0319 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna F172H | F172H | S/N F17200655 – F17200754 | F17200754 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna F172H | F172H | S/N F172-0320 – F172-0654 | F172-0654 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna F172K | F172K | S/N F17200755 – F17200804 | F17200804 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna F172L | F172L | S/N F17200805 – F17200904 | F17200904 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna F172M | F172M | S/N F17200905 – F17201234 | F17201234 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna F172M | F172M | S/N F17201235 – F17201514 | F17201514 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna FP172 | FP172 | S/N FP172-0001 – FP172-0003 | FP172-0003 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna FR172E | FR172E | S/N FR17200001 – FR17200060 | FR17200060 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna FR172F | FR172F | S/N FR17200061 – FR17200145 | FR17200145 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna FR172G | FR172G | S/N FR17200146 – FR17200225 | FR17200225 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna FR172H | FR172H | S/N FR17200226 – FR17200350 | FR17200350 | Quantity Per Aircraft 2 | Location fuel valve | Eligibility Chart 1610 |
| Cessna FR172J | FR172J | S/N FR17200351 – FR17200590 | FR17200590 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna FR172K | FR172K | S/N FR17200591 – FR17200675 | FR17200675 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna P172D | P172D | S/N P17257120 – P17257188 | P17257188 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna R172K | R172K | S/N R1722000 – R1723454 | R1723454 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna 175 | 175 | S/N 55001 – 56238 | 56238 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna 175A | 175A | S/N 56239 – 56777 | 56777 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna 175B | 175B | S/N 17556778 – 17557002 | 17557002 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna 175C | 175C | S/N 17557003 – 17557119 | 17557119 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna 177 | 177 | S/N 17700001 – 17701164 | 17701164 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna 177A | 177A | S/N 17701165 – 17701370 | 17701370 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna 177B | 177B | S/N 17701371 – 17702752 | 17702752 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna 180 | 180 | S/N 30000 – 32661 | 32661 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 180A | 180A | S/N 32662 – 50355 | 50355 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 180B | 180B | S/N 0 – ZZZZZZZZZZZZZZZ | ZZZZZZZZZZZZZZZ | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 180C | 180C | S/N 0 – ZZZZZZZZZZZZZZZ | ZZZZZZZZZZZZZZZ | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 180D | 180D | S/N 0 – ZZZZZZZZZZZZZZZ | ZZZZZZZZZZZZZZZ | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 180E | 180E | S/N 0 – ZZZZZZZZZZZZZZZ | ZZZZZZZZZZZZZZZ | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 180F | 180F | S/N 0 – ZZZZZZZZZZZZZZZ | ZZZZZZZZZZZZZZZ | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 180G | 180G | S/N 0 – ZZZZZZZZZZZZZZZ | ZZZZZZZZZZZZZZZ | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 180H | 180H | S/N 0 – ZZZZZZZZZZZZZZZ | ZZZZZZZZZZZZZZZ | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 180J | 180J | S/N 18052285 – 18052384 | 18052384 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 180J | 180J | S/N 18052385 – 18052770 | 18052770 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 182 | 182 | S/N 0 – ZZZZZZZZZZZZZZZ | ZZZZZZZZZZZZZZZ | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 182A | 182A | S/N 33843 – 51556 | 51556 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 182B | 182B | S/N 0 – ZZZZZZZZZZZZZZZ | ZZZZZZZZZZZZZZZ | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 182C | 182C | S/N 0 – ZZZZZZZZZZZZZZZ | ZZZZZZZZZZZZZZZ | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 182D | 182D | S/N 0 – ZZZZZZZZZZZZZZZ | ZZZZZZZZZZZZZZZ | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 185 | 185 | S/N 185-0001 – 185-0237 | 185-0237 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna A185F | A185F | S/N 18502091 – 18502310 | 18502310 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna A185F | A185F | S/N 18502311 – 18503153 | 18503153 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 190 | 190 | S/N 16084 – 16183 | 16183 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 195A | 195A | S/N 16084 – 16183 | 16183 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 195B | 195B | S/N 16084 – 16183 | 16183 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 195 (LC-126A,B,C) | 195 (LC-126A,B,C) | S/N 16084 – 16183 | 16183 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 210 | 210 | S/N 57001 – 57575 | 57575 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 210A | 210A | S/N 21057576 – 21057840 | 21057840 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 310 | 310 | S/N 35000 – 35546 | 35546 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 310B | 310B | S/N 35547 – 35771 | 35771 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 310C | 310C | S/N 35772 – 39031 | 39031 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 310D | 310D | S/N 39032 – 39299 | 39299 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 310F | 310F | S/N 310-0001 – 310-0156 | 310-0156 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 310G | 310G | S/N 310G0001 – 310G0156 | 310G0156 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 310H | 310H | S/N 310H0001 – 310H0148 | 310H0148 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 310I | 310I | S/N 310I0001 – 310I0200 | 310I0200 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 310J | 310J | S/N 310J0001 – 310J0200 | 310J0200 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 310J-1 | 310J-1 | S/N 310J0001 – 310J0200 | 310J0200 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 310K | 310K | S/N 310K0001 – 310K0245 | 310K0245 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 320 | 320 | S/N 320-0001 – 320-0110 | 320-0110 | Quantity Per Aircraft | Location fuel valve | Eligibility Chart 1610 |
| Cessna 320-1 | 320-1 | S/N 320-0001 – 320-0110 | 320-0110 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna 320A | 320A | S/N 320A0001 – 320A0047 | 320A0047 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna 320B | 320B | S/N 320B0001 – 320B0062 | 320B0062 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna 320C | 320C | S/N 320C0001 – 320C0073 | 320C0073 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
| Cessna 320D | 320D | S/N 320D0001 – 320D0130 | 320D0130 | Quantity Per Aircraft 1 | Location fuel valve | Eligibility Chart 1610 |
Reference only: Please verify the product is eligible for your aircraft before adding to your cart.
How do I keep contaminants out of my fuel system?
The fuel selector valve works in unscreened fuel. Contaminated fuel can cause selector valve seal damage. When fueling from possibly contaminated fuel sources McFarlane recommends the use of a fuel filter, such as Mr. Funnel or another filtering device, to reduce trash in the fuel system.
What pressure is used to test the fuel selector valves after repairs?
We pressure test our repaired valves to a minimum of 5 psi using precision controlled air pressure and a calibrated low pressure indicator. This pressure is above the normal fuel pressure on the valve and below the limits of the springs in the valve. Each valve is submerged in Stoddard solvent while the air pressure is applied to the valve. The valves are then tested in each position to assure that there are no inter-port or external leaks. Leaks are detected by looking for air bubbles escaping from the valve.
How do I know when to replace or service my fuel selector valve?
The most common indication of external fuel valve leaks is the smell of avgas in the cabin. Most valves are located under the cabin floor. Fuel stain on the valve and drain plug or drain valve or on the belly of the aircraft can also indicate external leakage. External leaks are generally around the actuation valve stem. Internal leaks are detected when the fuel is turned off and fuel continues to drip during fuel system maintenance. Inner port leakage will allow fuel from one tank to leak into another fuel tank. This type leak is difficult to detect. Fuel transfer from one tank to another with the fuel valve selected to one tank only will indicate inner-port leakage. An extended period of time is needed to detect fuel transfer from one tank to another. Generally if internal leakage is detected when servicing the fuel system, it is likely there is also inner-port leakage.
Should I use a sealer or lubrication for my Viton gaskets?
The Viton gasket and screw seals do not require any sealer and must not have any lubricants. Do not over tighten the attachment screws as over tightening can extrude the gasket out from under the transmitter and tear the gasket in the screw holes. This will cause a leak. Tighten the screws evenly until you see the gasket just start to extrude a little. Any lubrication will aggravate the tearing of the gasket.