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ST Style Urethane Wiper Ring, 2.75 Inch Rod Diameter, 3.25 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 2.75	Supplier Part Number ST-275	Thickness (in) 1/4	Product Weight 0.03 lbs	Alternate Part Numbers Alternate Part Number C1DL41, Alternate Part Number MI-00967672, Alternate Part Number MINO-00407X20020

Product Questions & Answers 3

Product Questions & Answers

Got a cylinder with a 2.75 inch rod that needs a new wiper, this the right size to drop in?

Question by: Tony A on May 21, 2025, 8:11 AM

For a 2.75 inch rod diameter, yes, the dimensions line up. The wiper OD comes in at 3.25 inches with a 1/4 inch base thickness, so it fits standard hydraulic cylinder configurations built around that rod size. It's a urethane ST style profile, which gives you a solid base fit and keeps dirt, debris, and moisture out during rod retraction.

Answer by: Customer Support on May 22, 2025, 11:50 AM

trying to match up a wiper on a cylinder rod, are these dimensions for a 2.75 rod with a 3.25 outside and 1/4 base?

Question by: Eddie C on Jan 15, 2026, 7:01 AM

The key callouts on this ST style wiper ring are a 2.75 inch rod diameter, a 3.25 inch wiper outside diameter, and a 1/4 inch base thickness. If those three numbers match what your cylinder is built for, you are looking at the right size.

Answer by: Customer Support on Jan 17, 2026, 6:39 AM

What size rod does this wiper ring fit? I wanna make sure it's the right one for my cylinder.

Question by: Keith B on Jun 22, 2025, 9:45 PM

This Hercules ST Style wiper ring is made to fit a 2.75-inch diameter rod. The outside diameter of the wiper itself is 3.25 inches, and the base is 1/4 inch thick.

Answer by: Customer Support on Jun 24, 2025, 6:57 AM

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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