MCPS 4 PC PISTON SEALS MCPS-115X100X12

Specifications

Alternate Part Numbers Alternate Part Number C1KM73	Brand Hercules Sealing Products	Brand Hercules Sealing Products	Pack Size 1.00	UOM EA	Supplier Part Number MCPS-115X100X12	Product Weight 0.10 lbs

Product Questions & Answers 3

Product Questions & Answers

Will these piston seals hold up in a system that runs pretty much constantly?

Question by: Rick P on May 17, 2025, 12:24 PM

These MCPS piston seals are designed for robust industrial applications, so they should be suitable for systems with demanding duty cycles. Their durable construction enhances the longevity and efficiency of hydraulic machinery, even with continuous use.

Answer by: Customer Support on May 19, 2025, 6:33 AM

trying to match up a piston seal, are these the ones that measure 115mm OD, 100mm ID, and 12mm thick?

Question by: Stan B on Apr 6, 2025, 3:41 PM

The MCPS 4 PC piston seal set is sized at 115 mm outside diameter, 100 mm inside diameter, and 12 mm thickness, with the part number MCPS-115X100X12.

Answer by: Customer Support on Apr 7, 2025, 7:22 PM

These say 115mm outer diameter and 100mm inner diameter, that a 15mm wall or is the 12mm thickness the radial measurement I should be going off of when fitting these to my cylinder bore?

Question by: Rusty R on Feb 25, 2026, 12:36 PM

The 12mm figure is the cross-sectional thickness of the seal, not the radial wall. Your bore diameter is what you match to the 115mm outer dimension, and the 100mm inner diameter seats against the piston itself. So when you're sizing these up, work from both the bore and the piston shaft measurements together. A 115mm bore with a 100mm piston rod is what this seal is built around.

Answer by: Customer Support on Feb 27, 2026, 11:43 AM