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ST Style Urethane Wiper Ring, 3.75 Inch Rod Diameter, 4.25 Inch Wiper OD, 1/4 Inch Base Thickness

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Description & Features

Ensure optimal performance and protection for hydraulic systems with the ST Style Urethane Wiper Ring. Designed to fit a 3.75-inch rod diameter, this ring features a 4.25-inch outer diameter and a 1/4-inch base thickness, making it ideal for demanding industrial applications. Crafted from durable urethane, it operates effectively within a temperature range of -65°F to 220°F, providing reliable sealing and wiping capabilities in harsh environments. For applications requiring higher temperature resistance, a fluorocarbon variant is available, accommodating temperatures from -20°F to 400°F.

Manufactured by Hercules Sealing Products, this wiper ring ensures superior performance in safeguarding hydraulic components from contaminants. Its precise dimensions and robust construction make it a dependable choice for maintaining system integrity and extending equipment lifespan. The ST Style Urethane Wiper Ring is an essential component for ensuring clean and efficient operation in hydraulic systems.

SKU: ST-375

Supplier Part Number (MPN): ST-375

Alternate Part Numbers: C1DL48

Specifications

Brand
HERCULES® SEALING PRODUCTS
Dimensions
1/4 in H
Durometer
90
Material
Urethane
Series
ST Series

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Product Questions & Answers (2)

Question by: Denise J on Nov 2, 2025, 8:13 PM
Got a cylinder with a 3.75 inch rod and need a new wiper, this the right part?
Answer by: Customer Support on Nov 4, 2025, 8:12 AM
For a 3.75 inch rod diameter, yes, this is the correct fit. The outer diameter on this wiper ring comes in at 4.25 inches with a 1/4 inch base thickness, so those are the other dimensions you'll want to confirm against your housing before ordering. As long as your bore and groove match up to those numbers, you're in good shape.
Question by: Randy G on Nov 26, 2025, 6:38 AM
got a 3.75 rod, will this ST-375 wiper ring match up or am i gonna be fightin it
Answer by: Customer Support on Nov 27, 2025, 7:41 PM
The key numbers are a 3.75 inch rod diameter, a 4.25 inch wiper outside diameter, and a 1/4 inch base thickness. If your gland is set up for those dimensions in an ST style wiper ring, ST-375 is the matching size.

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