SKU: TOTMSL0690-25
MPN: MSL0690 25
The Total Seal Piston Ring Set 4.145 Gapless Top 1/16 1/16 3/16 is a precision-engineered ring kit designed for high-performance engine builds requiring file-fit installation and minimal blowby. Built to Total Seal's exacting standards, this eight-cylinder piston ring set combines a gapless top ring with chromium nitride coating to deliver superior sealing and reduced oil consumption across the power band.
The ring package consists of a 1/16-inch top ring, 1/16-inch second ring, and 3/16-inch oil ring, specifically configured for a 4.145-inch bore diameter. The gapless top ring design eliminates the gap found in traditional rings, reducing combustion gas bleed and enhancing ring sealing efficiency—a critical advantage in competition engines where every fraction of compression matters. The chromium nitride surface treatment provides hardness and heat resistance, extending ring life under elevated cylinder temperatures and high RPM operation. Low-tension design minimizes friction losses, allowing the engine to breathe more freely while maintaining consistent pressure between ring and cylinder wall.
This ring set is engineered for enthusiasts and builders working with eight-cylinder engines in racing, hot rod, and high-output street applications. File-fit installation is required, meaning end gaps must be checked and hand-fitted to the specific bore for optimal sealing and to prevent ring flutter or stiction. Total Seal piston ring sets are trusted for their consistency and precision, making them a standard choice in serious engine-building shops where repeatability and performance are non-negotiable.
For builders upgrading ring quality, swapping to gapless top rings, or rebuilding after major engine work, this Total Seal set delivers the sealing integrity and durability expected in performance applications. The combination of chromium nitride coating, low-tension design, and gapless configuration represents proven technology for controlling blowby and maximizing horsepower output.
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