RA 13B 2mm and 3mm Super Seals
RA Super Seals are Rotary Aviation's claim to fame!! Designed for high performance race, street and track cars, they welcome the abuse of high turbo and nitrous abuse. These seals are running - season after season - in some of the fastest rotary cars in the world. Super seals are available for 2mm (13B and 20B); 3mm (13B and 20B) and 12A engines. Two rotor sets include 6 seals; 20B sets include 9 seals. Don't forget to order SPRINGS.
RA Super Seals are the latest offering in our line of performance apex seals. We have had excellent results from the classic "RA" seals, which are running in stock and modified street cars and race cars all over the world. In fact, we have so many customers into high boost drag racing, that we decided to develop an apex seal specifically geared toward higher boost turbo cars. The seal was developed in the summer of 2005 and are in used in hundreds of track and street cars though out the world.
RA Super Seals are made of the same base material as classic RA seals. They then go through an extra process to make the seals even more resistant to high heat conditions. This secondary treatment process gives them a distinctive black color.
RA Super Seals do NOT come with springs. We recommend using our racing springs/ Mazda springs (which have a high nickel content for high temperature performance) with these seals. Like all 2 mm RA seals, they are a drop in replacement for the Mazda stock seals - no engine modifications required.
We do NOT claim that any of our seals are unbreakable. All seals will fail if pushed hard enough or if installed in worn or improperly machined rotors. When pushed hard enough, the typical failure mode of RA 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 RA Super seals is that the additional processing raises the annealing temperature about 80%. This gives an all important margin of safety in engines running high boost or a big shot of NOX.
RA Super seals come with the same warranty is classic RA seals: We guarantee them against defects in manufacturing and material for 60 days from date of purchase. We guarantee 2mm seals will be a direct replacement part for stock Mazda seals. Defective seals will be replaced.