The Allstar Performance Valve Seals 3/8 PTFE .531 Guide (ALL90242) are positive stop style seals with spring loaded wipers for maximum oil control.
These seals are sized for a 3/8 inch valve stem with a .620 inch outer diameter and a .531 inch guide outer diameter. Machining is required for most installations. Each package contains a set of 16 seals. A 100-pack option (ALL90242-100) is also available.
Spec Sheet: Allstar Performance PTFE Valve Seal Spec Sheet (PDF)
FAQ
What size stem and guide do the ALL90242 seals fit?
These seals fit a 3/8 inch valve stem with a .620 inch outer diameter and a .531 inch guide outer diameter.
Is machining required to install these seals?
Yes, machining is required for most installations of these positive stop PTFE seals.
What material are these seals made from?
These are PTFE seals with spring loaded wipers for maximum oil control.
How many seals are included?
Each package contains a set of 16 seals. A 100-pack option (ALL90242-100) is also available.

