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Price: $269.99
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East Coast Rotary Sales Team
We are a licensed dealer for
East Coast Rotary Inc., the creator of the RA Classic and Super Seal apex seals.
Item: East Coast Rotary Inc. 3mm Super Seal Apex Seals
Note: For use in Mazda RX-7 NA & Turbo 13B Rotary Engines from 1984-1996.These seals offer 700% more bending strength and are 85% harder than other aftermarket competitors. The seals do not come with springs.
Important: These seals are NOT a drop in replacement for the stock Mazda seals used on 1986 to 1996 13B engines. They will require machining of the rotor to be installed in 1986-1996 13B engines. They are a drop in replacement for 1984-1985 13B engines.
The Super Seal was introduced in 2005 specifically geared toward higher boost turbo cars. They are made from the same base material as the Classic apex seals but they are then put through an extra process to make the seals even more resistant to high heat conditions which gives them a distinctive black color.
When pushed hard enough, the typical failure mode of these seals is that they \'sag\' in the center when the critical annealing temperature of the metal is reached.The result is a loss of compression and subsequently power, but the seal remains intact and does not damage the rotor housing or rotors.The difference in the Super Seals is that the extra processing raises the annealing temperature about 80%.
These seals are harder than stock Mazda seals which prevents the seals from fracturing under high heat/horsepower conditions. This increased hardness in the seals, under some circumstances, will increase the wear rate on the housings slightly higher than with OEM seals.
Allaftermarket seals can result in chatter marks or galling on the rotor housings under some specific conditions. This is a conditional problem, and may be caused by high oil temperature and/or low oil in the combustion chamber,and isnot specific toseals made byanyone.
About: East Coast Rotary has built engines for cars, airplanes, industrial applications, and even race boats. Their customdesigned in-housebuilt apex seals are well known, and have been used,throughout the rotary community for years and are perfect forany normally aspiratedorboosted streetor track car.
Warranty: Guaranteed against defects in manufacturing and material for 60 days from date of purchase. Defective seals will be replaced. We do not claim that our sealswill not break or warp, even the best made ceramic and steel apex seal can be damaged if pushed hard enough or installed in worn or improperly machined rotors, but we have never had anyone report aproblem.