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ST Style Urethane Wiper Ring, 4.50 Inch Rod Diameter, 5.25 Inch Wiper OD, 3/8 Inch Base Thickness

Brand Hercules Sealing Products	Brand Hercules Sealing Products	Pack Size 1.00	UOM EA	Rod Diameter A 4.50	Supplier Part Number ST-450	Thickness (in) 3/8	Product Weight 0.10 lbs	Alternate Part Numbers Alternate Part Number C1DL51, Alternate Part Number MI-00968155, Alternate Part Number MINO-00407X20040

Product Questions & Answers 3

Product Questions & Answers

Hey, will this wiper ring hold up if it gets real cold? I'm talking sub-zero temps.

Question by: Brent K on Feb 25, 2026, 11:31 AM

This Hercules ST Style Urethane Wiper Ring is rated to handle temperatures as low as -65°F, so it should perform just fine in those conditions.

Answer by: Customer Support on Feb 27, 2026, 7:57 AM

Got a cylinder with a 4.50 inch rod that needs a new wiper, this the right size for that?

Question by: Floyd R on Mar 26, 2026, 12:26 PM

For a 4.50 inch rod diameter, yes, this is the correct wiper ring. The outer diameter comes in at 5.25 inches with a 3/8 inch base thickness, so make sure your housing groove matches those dimensions before you drop it in. As long as the bore and groove geometry line up, it should seat right and do its job keeping contamination out of the cylinder assembly.

Answer by: Customer Support on Mar 28, 2026, 6:16 AM

got a cylinder with a 4.50 rod, is this ST-450 the right size wiper or am i missin something

Question by: Wes F on Jul 2, 2025, 8:31 AM

Fit comes down to the rod diameter and the wiper OD. This ST style urethane wiper ring is sized for a 4.50 inch rod diameter with a 5.25 inch wiper outer diameter, and it has a 3/8 inch base thickness.

Answer by: Customer Support on Jul 3, 2025, 3:02 PM

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Model Number	Rod Diameter A	Wiper O.D. B	Thickness (in)
ST-125	1.25	1.625	3/16
ST-175	1.75	2.125	3/16
ST-200	2	2.5	1/4
ST-300	3	3.5	1/4
ST-100	1	1.375	3/16
ST-112	1.125	1.5	3/16
ST-118	0.188	1.563	3/16
ST-137	1.375	1.75	3/16
ST-150	1.5	1.875	3/16
ST-162	1.625	2	3/16
ST-187	1.875	2.25	3/16
ST-212	2.125	2.625	1/4
ST-225	2.25	2.75	1/4
ST-250	2.5	3	1/4
ST-275	2.75	3.25	1/4
ST-325	3.25	3.75	1/4
ST-350	3.5	4	1/4
ST-375	3.75	4.25	1/4
ST-400	4	4.5	1/4
ST-450	4.5	5.25	3/8
ST-475	4.75	5.5	3/8
ST-50	0.5	0.75	1/8
ST-62	0.625	0.875	1/8
ST-75	0.75	1.125	3/16
ST-87	0.875	1.25	3/16