Total Seal T0690 25 TNT Gapless 2nd Piston Ring Set

The Total Seal T0690 25 TNT Gapless piston ring set is designed for engines with a 4.145-inch bore and includes a gapless second ring configuration. This file-fit set is intended for precise installation and adjustment, helping support proper ring-to-cylinder-wall contact when prepared according to the engine builder’s requirements.
The rings feature a 1/16-inch top ring, a 1/16-inch gapless second ring, and a 3/16-inch oil ring. They are made from ductile iron and finished in a natural color, with standard tension for the specified application.
This kit is configured for 8-cylinder engines and provides a complete piston ring set for the stated bore and ring dimensions. Review engine specifications and installation requirements before selecting the set to ensure the configuration matches the application.
Total Seal piston rings are manufactured for performance-oriented engine assembly needs, and the T0690 25 combines a gapless second ring design with file-fit flexibility. The set is supplied as a kit for the described 8-cylinder configuration.

Features:

• Brand: Total Seal

• Part Number: T0690 25

• Ring Type: TNT gapless piston ring set

• Second Ring: Gapless design

• Bore Size: 4.145 inches

• Fitment Style: File fit

• Ring Thickness: 1/16-inch top ring, 1/16-inch second ring, and 3/16-inch oil ring

• Material: Ductile iron

• Tension: Standard tension

• Engine Configuration: 8-cylinder kit

• Finish: Natural