Hydrometer collar improvement

For use in lead-acid storage batteries of the type installed within vehicles, an improved hydrometer collar for creating a fluid-tight seal comprising, in combination:

• a cylindrically-shaped member having an annular side wall;
• a plurality of sealing rings being formed upon the outer surface of said annular side wall, each one of said plurality of sealing rings being spaced axially apart from each other in a substantially parallel relationship so as to form annular grooves therebetween and having an external peripheral surface;
• and
• a small wiping rib being formed integrally with each one of said plurality of sealing rings and extending radially outwardly from said external peripheral surface of a respective one of said sealing rings;
• each one of said wiping ribs being disposed substantially intermediate an upper surface and a lower surface of a corresponding one of said plurality of sealing rings,
• whereby said wiping ribs are easily deformable so as to fill in any of said irregularities existing in the interior surface of said battery casing bore of said storage battery into which said collar is inserted thereby creating a fluid-tight seal.