Oversized thickness apex seals are designed to improve sealing for out-of-spec rotors with apex seal slots that would normally be too wide.
All Goopy Apex Seals are designed with strength and longevity in mind. Made from "Goopy-Alloy" in the USA, these seals will support all your needs from stock engine overhauls to high horsepower builds.
Size Guide
2mm slot
3mm slot
Stock
0.075" thickness
0.115" thickness
Oversized
0.078" thickness
0.118" thickness
Note: 12A engines have 3mm apex seal slots, 13B engines have either 2mm or 3mm slots, RX-8 13B Renesis engines have 2mm slots.
