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ST Style Urethane Wiper Ring, 1.88 Inch Rod Diameter, 2.25 Inch Wiper OD, 3/16 Inch Base Thickness

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Description & Features

This ST Style Urethane Wiper Ring from Hercules Sealing Products is designed to provide effective rod wiping in demanding hydraulic applications. Constructed from high-quality urethane, this wiper ring ensures durability and reliable performance across a temperature range of -65°F to 220°F.

The ST Style Urethane Wiper Ring features a 1.88 inch rod diameter and a 2.25 inch wiper OD, with a 3/16 inch base thickness. Also identified by catalog number C1DL33, this wiper ring is suitable for various hydraulic cylinders and equipment requiring efficient contamination exclusion.

SKU: ST-187

Supplier Part Number (MPN): ST-187

Alternate Part Numbers: C1DL33, MI-02105335, MINO-00407X30282

Specifications

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

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Product Questions & Answers (3)

Question by: Ray W on Jun 30, 2025, 10:38 AM
Got a cylinder with a 1.88 inch rod that needs a new wiper, will this one fit right, or do I need to worry about matching up that OD too?
Answer by: Customer Support on Jul 2, 2025, 10:22 AM
For a proper fit you need both dimensions to line up. The rod diameter on this one is 1.875 inches, and the outer diameter comes in at 2.25 inches. Both of those need to match your housing bore and rod size for it to seat correctly and do its job keeping contaminants out. If your bore is cut for a 2.25 OD and your rod is running 1.875, you're good to go.
Question by: Clint A on Feb 17, 2026, 3:53 PM
What's the deal with the temp range on this wiper ring? Need it to hold up in some pretty hot conditions.
Answer by: Customer Support on Feb 19, 2026, 6:06 AM
This Hercules wiper ring is made from urethane, which means it's good for temperatures from -65°F up to 220°F. If you need something that handles higher heat, you might want to look at wiper rings made from fluorocarbon, which can withstand temperatures up to 400°F.
Question by: Ricky R on May 13, 2025, 12:05 PM
got a cylinder with a 1.875 rod, is this the right wiper size or am i gonna be fighting it?
Answer by: Customer Support on May 15, 2025, 7:03 AM
Fit comes down to the rod and wiper dimensions. This ST style urethane wiper ring is sized for a 1.875 inch rod diameter, with a 2.25 inch wiper OD and a 3/16 inch base thickness.

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