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We are the ORIGINAL home of "RA" Classic and "RA" Super Seals (RA stands for "Rotary Aviation"). Our seals were developed in response to needs of street & track engine builders running over stock horsepower. Stock OEM seals are an excellent choice for "daily drivers" seeking maximum rotor housing life. The downside of OEM seals is that, when pushed beyond their limits, they fracture. The resulting shrapnel destroys expensive engine parts (rotors, housings, end housings). When a car using RA seals experiences over boost and detonation (causing severe overheating), the typical failure mode of the seals is that the seal sags in the rotor groove. RA seals ALMOST never fracture (note that we are not claiming our seals to be unbreakable, but if a tip does break off our seals, it is under conditions dramatically beyond the conditions that cause fractures in OEM seals. RA seals do not cause the fracture debris that results in engine damage from OEM seals). A side effect of the increased hardness of RA seals is that, under certain conditions, rotor housing wear is slightly higher than with OEM seals. However, the lack of catastrophic damage when the seals are overstressed, makes RA seals the better choice for high horsepower engines. All serious competitors running rotary engines use pre-mix oil and fuel instead of the stock oil injection. This is what we recommend and the conditions under which we use the seals in aircraft and for all our seal testing. Curious about the cars that run our seals? Click on the "RA Seal Cars" navigation button and look at a few examples of cars using our seals.
Unsolicited comments from customers about our seals.. "It has been almost two years since I purchased my set of seals. I took the engine apart due to a spun bearing (that was my fault for not checking the oil level. LOL). Guess what? Seals are in perfect shape and so are the housings. Just got done in-installing the engine and seam seals went back in along with same housings, car is running great and I am MORE then satisfied. Thanks! Juan C. Guyanilla, Puerto Rico 14-Sept-07 "I want to thank you for such a great apex seal, We have had great luck with them, our best time so far is 8.15 at 164. We hope to hit the 7,s on the 16th at Union grove Wisconsin. Can you please put it in your web sight. thanks" Update 10/29/2007: Can you update the time on my car? It did 7.82 @ 173 on Oct 21, 2007. Car has over 800 hp on your seals and hold up great!" Pedro L. Puerto Rico (see photo of this car on the RA SEAL CARS page)
Dear Laura - This past labor day weekend the US
We offer a wide selection of our CUSTOM SEALS. We do NOT resell other people's products. Available seals: RA SUPER SEALS (13B and 20 B) 2mm RA CLASSIC Seals (13B and 20B) 3mm RA Super Seals (13B and 12A)
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Copyright 1997- 2011 Questions on this web site? email laura@rotaryaviation.com |