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Piston T-Seal, 4.00 Inch Bore, O-Ring Groove

Description & Features

This Piston T-Seal is designed for a 4.00 Inch Bore with an O-Ring Groove. It is suitable for applications within a pressure range of 0 to 10,000 PSI and a temperature range of -65°F to 220° F.

Constructed with hard plastic back-up rings and a Buna-N rubber seal, this Piston T-Seal offers reliable performance in demanding hydraulic environments. This Hercules Sealing Products T-seal has catalog number C1DM36.

SKU: TP-039

Supplier Part Number (MPN): TP-039

Alternate Part Numbers: C1DM36, MI-01810322, MINO-00407Q30096, TP-342, TSP-342

Specifications

Bore 4	Brand Hercules Sealing Products	Brand Hercules Sealing Products	Pack Size 1.00	UOM EA	Supplier Part Number TP-039	Alternate Part Numbers Alternate Part Number C1DM36, Alternate Part Number MI-01810322, Alternate Part Number MINO-00407Q30096, Alternate Part Number TP-342, Alternate Part Number TSP-342	Product Weight 0.06 lbs

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Product Questions & Answers (2)

Question by: Shane P on Oct 24, 2025, 6:40 AM

got a cylinder with a 4 inch bore and an o-ring groove on the piston, is this the right t-seal for that setup?

Answer by: Customer Support on Oct 25, 2025, 10:14 AM

The key callouts are a 4.00 inch bore and an O-ring groove, which is exactly what this piston T-seal is made for.

Question by: Lance E on Aug 11, 2025, 7:07 AM

does this t-seal work up to 10,000 PSI or is that just the upper limit they slap on the spec sheet without it actually holdin up that high

Answer by: Customer Support on Aug 12, 2025, 7:27 PM

That 10,000 PSI figure is the rated upper limit for this seal, so it covers the full range from zero pressure up to that ceiling. Whether your system runs low, mid-range, or up near that max, the seal is built to handle it. The Buna-N rubber and hard plastic back-up rings are what keep it stable under that kind of load.