Custom Ring Gaps

Precision rings incorporated is a custom ring manufacturer.  Selection of the proper ring gap configuration is important in sealing applications. Acceptable leakage rates, sizes of the rings and types of assembly are factors that help determine the proper gap configuration of our piston rings and seal rings. Shown here are the most common ring gap configurations. Please Contact Us to inquire about a gap configuration not shown below.

SQUARE CUT : The most practical and economical ring gaps. Recommended for most applications. Good leakage control.
ANGLE CUT : Widely used on rotating seals. Rings should be oriented so the leading edge points in the direction of rotation. Rings with an angle gap decrease the tendency to score at the gap.
TITE JOINT : Sometimes applied to contracting and snap rings so that they can be easily removed from the groove.
STEP CUT : Used where two rings per groove are not practical. The step cut is used to prevent a direct flow path between the piston and cylinder. Cross section must be larger to accommodate strength to the steps.
HOOK STEP : Used for blind assembly or when ring must pass ports in the cylinder wall. Limits free expansion.
MITRE STEP : The only single rings that have tighter leakage control than any other single ring. Used on larger diameter rings when using one ring per groove.
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