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ST Style Urethane Wiper Ring, 1.00 Inch Rod Diameter, 1.38 Inch Wiper OD, 3/16 Inch Base Thickness

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Description & Features

The ST Style Urethane Wiper Ring is designed to keep hydraulic rods clean and free of contaminants.

This Hercules Sealing Products wiper ring features a 1.00 inch rod diameter and a 1.38 inch wiper OD. The base thickness of this ST Style Urethane Wiper Ring is 3/16 inch. Constructed from urethane, this wiper ring performs in temperatures ranging from -65°F to 220°F.

SKU: ST-100

Supplier Part Number (MPN): ST-100

Alternate Part Numbers: C1DL24, MI-00968871, MINO-00407X20074

Specifications

Brand
HERCULES® SEALING PRODUCTS
Dimensions
3/16 in H
Durometer
90
Inside Diameter
1 in
Material
Urethane
Series
ST Series

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Product Questions & Answers (3)

Question by: Brenda M on Jun 27, 2025, 2:26 PM
Will this wiper ring hold up okay in temperatures that get pretty cold, like below zero sometimes?
Answer by: Customer Support on Jun 28, 2025, 8:11 PM
Urethane provides a good temperature range, rated to operate from -65°F up to 220°F. So, yes, it should handle below-zero conditions without issue.
Question by: Marvin M on Oct 27, 2025, 12:41 PM
температурный диапазон on these urethane wipers, what's the lowest they'll hold up in? got equipment sitting outside through some real cold winters and need to know if they'll still flex right come spring startup.
Answer by: Customer Support on Oct 29, 2025, 7:36 AM
Urethane construction on this wiper handles temps down to -65°F, so cold storage or outdoor winter conditions won't crack or stiffen it into uselessness. At the high end it runs to 220°F, which covers most standard hydraulic cylinder operating ranges. For equipment that sits cold and then gets fired up seasonally, this material range gives you solid flexibility across that full swing.
Question by: Norm R on May 29, 2025, 9:19 AM
got a 1 inch rod, is this the wiper that matches up or am i off on the OD?
Answer by: Customer Support on May 30, 2025, 6:23 PM
Fit comes down to both numbers. This ST style wiper is sized for a 1.00 inch rod and it has a 1.38 inch wiper outside diameter (listed as 1.375). If your setup calls for those two dimensions, it is the right match.

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