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Style PSC Bronze Filled Piston Seal, 2.50 Inch Bore Diameter, 1.88 Inch Groove Diameter, Inch Groove Width

Description & Features

The Style PSC Bronze Filled Piston Seal is a high-performance component designed for demanding hydraulic applications. With a bore diameter of 2.50 inches and a groove diameter of 1.88 inches, this seal ensures optimal fit and function in various industrial settings. Crafted from 40% bronze-filled PTFE, it provides excellent wear resistance and longevity, even under pressures up to 5,000 PSI. A robust rubber energizer and quattro ring enhance sealing efficiency across a wide temperature range from -40°F to 220°F.

Manufactured by Hercules Sealing Products, this piston seal is ideal for use in systems requiring precise sealing without wear rings. Its design accommodates bore tolerances of +0.004/-0 inches and groove width tolerances of +0.005/-0 inches, ensuring compatibility with a variety of piston diameters. The Style PSC Bronze Filled Piston Seal is a reliable choice for maintaining system integrity in harsh environments.

SKU: PSQ-40

Supplier Part Number (MPN): PSQ-40

Alternate Part Numbers: C1GM40, MI-04668659, MINO-00407X10182

Specifications

Bore 2.50	Bore Tolerance (in) +0.004/-0	Brand Hercules Sealing Products	Brand Hercules Sealing Products	Pack Size 1.00	UOM EA	Groove Dia. E 1.88	Groove Width Tolerance (in) +0.005 / -0	Piston Dia. F 2.50	Seal Height B 0.27	Supplier Part Number PSQ-40	Alternate Part Numbers Alternate Part Number C1GM40, Alternate Part Number MI-04668659, Alternate Part Number MINO-00407X10182	Product Weight 0.05 lbs

Similar Products

Model Number	Bore	Seal Height B	Groove Dia. E	Piston Dia. F	Bore Tolerance (in)	Groove Width Tolerance (in)
PSQ-48 Bronze Filled Piston Seal	3	0.271	2.384	2.999	+0.004/-0	+0.005 / -0
PSQ-56 Bronze Filled Piston Seal	3.5	0.271	2.884	3.499	+0.004/-0	+0.005 / -0
PSQ-64 Bronze Filled Piston Seal	4	0.271	3.384	3.999	+0.004/-0	+0.005 / -0
PSQ-80 Bronze Filled Piston Seal	5	0.271	4.384	4.999	+0.004/-0	+0.005 / -0

Product Questions & Answers (2)

Question by: Terry T on Jun 30, 2025, 7:28 PM

What kind of pressure can this seal handle without failing?

Answer by: Customer Support on Jul 2, 2025, 7:12 AM

This Style PSC piston seal is rated to handle pressures from 0 to 5,000 PSI, making it suitable for demanding hydraulic applications.

Question by: Joyce R on Jan 16, 2026, 2:15 PM

bore says 2.50 inches -- does that mean the piston diameter is also 2.50, or is there a difference I need to account for when ordering?

Answer by: Customer Support on Jan 17, 2026, 2:37 PM

The piston diameter for this seal is listed at 2.499 inches, so there is a slight undersize compared to the bore. That gap is intentional and accounts for proper fit. The bore tolerance runs +0.004/-0 inches, and the groove width tolerance is +0.005/-0 inches. Those dimensions are also specific to pistons without wear rings, so if your setup uses wear rings, this particular seal is not the right match.