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ST Style Urethane Wiper Ring, 4.00 Inch Rod Diameter, 4.50 Inch Wiper OD, 1/4 Inch Base Thickness

Brand Hercules Sealing Products	Brand Hercules Sealing Products	Pack Size 1.00	UOM EA	Rod Diameter A 4	Supplier Part Number ST-400	Thickness (in) 1/4	Product Weight 0.04 lbs	Alternate Part Numbers Alternate Part Number C1DL49, Alternate Part Number MI-00967976, Alternate Part Number MINO-00407X20032

Product Questions & Answers 2

Product Questions & Answers

Got a cylinder with a 4-inch rod that needs a new wiper, this the right size to be looking at?

Question by: Dwight B on Mar 4, 2026, 4:33 PM

For a 4.00-inch rod diameter, yes, this is the correct fit. The OD measures 4.50 inches with a 1/4-inch base thickness, which is the standard ST style profile used in hydraulic cylinder rod wiping applications. It keeps contaminants out of the bore when the rod retracts, so getting that rod diameter matched up correctly is the main thing.

Answer by: Customer Support on Mar 6, 2026, 6:58 AM

What size rod is this wiper ring made to fit?

Question by: Ralph H on Apr 18, 2025, 7:03 AM

This ST Style Urethane Wiper Ring is made to fit a 4.00-inch rod diameter.

Answer by: Customer Support on Apr 19, 2025, 3:17 PM

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