Fall Wiper Rings

1. Eliminates spotty or erratic contact on rod.
2. Provides longer life because the compressor spring in the "Squeeze-Grip" Action takes up all wear while the light-tight wiping edge continues to grip the rod.
3. The spring-loaded "Squeeze-Grip" Action on the rod is exactly the same for any number of rings of a given size because the pounds of breakout friction is individually controlled in each ring.

Factory Lapped (dry) by Pre-Actuating

In addition to complying with Spec. MIL-S-5049A, a worn-in true circle contact is created on piston rod by carefully pre-actuating each ring. This eliminates a wearing-in period after the ring has been installed during which the ring might not completely contact the piston rod with the possibility that small metal fragments might wear off and enter packing gland. This pre-actuating process is a Fall EXCLUSIVE and insures IMMEDIATE TRUE CIRCLE CONTACT from moment of installation.

Exclusive Ring Assembly

The 3-piece Fall Wiper Ring assembled into one piece as covered by patents consists of (1) a one-piece Split Wiper Ring (body) with a groove in its O.D., (2) a one-piece split compressor spring assembled in the groove (3) an endless cover band surrounding the compressor spring in the groove causing a squeeze grip action on the piston rod.

Fall Closed Joint Wiper Ring

The Fall Closed Joint Ring has been especially designed for those applications requiring absolute freedom from dirt passing through joint of ring to bearings or packing. (See illustration to the right) This Fall Closed Joint Ring has the same spring-loaded "Squeeze-Grip" Action and factory lapped (dry) wiping edge as the regular 3-piece type ring and functions exactly the same, but with the added assurance that no dirt passes through the joint.

The Fall Closed Joint Wiper Ring requires minimum space, can be installed in any position and operates most effectively under extreme conditions of dust, glaze, oil, grit, powder, gases, sand, ice and dirt, exposed to air conditions of submerged and/or heated or frigid conditions.

Fall 3-piece Wiper Rings are available in all sizes to 13" in diameter, Fall Closed Joint Wiper Rings are available in a wide variety of sizes. Contact EPM's engineering department to help solve your wiper ring problems.