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Style PSC Polyurethane Double-Acting Piston Seal, 2.00 Inch Bore Diameter, 1.63 Inch Groove Diameter, Inch Groove Width

Description & Features

Designed for double-acting hydraulic cylinders with a 2.00-inch bore, this piston seal handles pressure from 0 to 5,000 PSI across a temperature range of -65°F to 220°F. The Style PSC Polyurethane Double-Acting Piston Seal combines a 95A polyurethane sealing element with a 70A nitrile energizer, providing reliable dynamic sealing performance in demanding hydraulic applications.

Manufactured by Hercules Sealing Products, this seal fits a 1.625-inch groove diameter and is suited to pistons without wear rings. The polyurethane construction offers good resistance to wear and extrusion under high-cycle conditions typical of industrial hydraulic equipment.

SKU: PSC-326-WB

Supplier Part Number (MPN): PSC-326-WB

Alternate Part Numbers: C1GG33, MI-02851507, MINO-00407X30055

Specifications

Bore 2	Bore Tolerance (in) +0.002/-0	Brand Hercules Sealing Products	Brand Hercules Sealing Products	Pack Size 1.00	UOM EA	Groove Dia. E 1.63	Groove Width Tolerance (in) +0.005 / -0	Piston Dia. F 2.00	Piston Dia. Tolerance (in) +0/-0.002	Seal Height B 0.37	Supplier Part Number PSC-326-WB	Alternate Part Numbers Alternate Part Number C1GG33, Alternate Part Number MI-02851507, Alternate Part Number MINO-00407X30055	Product Weight 0.02 lbs

Similar Products

Model Number	Bore	Seal Height B	Groove Dia. E	Piston Dia. F	Bore Tolerance (in)	Groove Width Tolerance (in)	Piston Dia. Tolerance (in)
PSC-218 Double-Acting Piston Seal	1.5	0.15	1.254	1.498	+0.002/-0	+0.005 / -0	+0/-0.002
PSC-218-WB Double-Acting Piston Seal	1.5	0.265	1.254	1.498	+0.002/-0	+0.005 / -0	+0/-0.002
PSC-326 Double-Acting Piston Seal	2	0.255	1.625	1.998	+0.002/-0	+0.005 / -0	+0/-0.002
PSC-326-WB Double-Acting Piston Seal	2	0.37	1.625	1.998	+0.002/-0	+0.005 / -0	+0/-0.002
PSC-330 Double-Acting Piston Seal	2.5	0.255	2.125	2.498	+0.002/-0	+0.005 / -0	+0/-0.002
PSC-334 Double-Acting Piston Seal	3	0.255	2.624	2.997	+0.002/-0	+0.005 / -0	+0/-0.004
PSC-334-WB Double-Acting Piston Seal	3	0.37	2.624	2.997	+0.004/-0	+0.005 / -0	+0/-0.004
PSC-338 Double-Acting Piston Seal	3.5	0.255	3.125	3.498	+0.004/-0	+0.005 / -0	+0/-0.004
PSC-342 Double-Acting Piston Seal	4	0.255	3.625	3.998	+0.004/-0	+0.005 / -0	+0/-0.004
PSC-342-WB Double-Acting Piston Seal	4	0.37	3.625	3.998	+0.004/-0	+0.005 / -0	+0/-0.004
PSC-350 Double-Acting Piston Seal	5	0.255	4.636	4.999	+0.004/-0	+0.005 / -0	+0/-0.004
PSC-433-WB Double-Acting Piston Seal	6	0.5	5.521	5.999	+0.004/-0	+0.006 / -0	+0/-0.004

Product Questions & Answers (3)

Question by: Johnny G on May 14, 2025, 9:52 AM

What's the deal with the temperature range on this seal? Just makin' sure it can handle the heat.

Answer by: Customer Support on May 15, 2025, 11:14 AM

The operating temperature range is -65°F to 220°F. So, it should hold up in most hydraulic applications, even with some heat.

Question by: Neal B on Nov 5, 2025, 1:12 PM

Got a 2-inch bore cylinder that's been leaking and I need to swap out the piston seal. This one rated to handle the pressure my system runs at?

Answer by: Customer Support on Nov 7, 2025, 6:23 AM

For most industrial hydraulic setups, the PSC-326-WB handles up to 5,000 PSI, so unless you're running something pretty extreme, you should be well within range. The bore is 2.00 inches, groove diameter is 1.625 inches, and the piston diameter it's built for is 1.998 inches. Just make sure your groove tolerances line up with plus 0.005 / minus 0 on the width and plus 0.002 / minus 0 on the bore before you button everything back up.

Question by: Duane W on Dec 12, 2025, 6:53 PM

got a 2 inch bore cylinder. is this PSC-326-WB the right piston seal size or am i gonna be fighting it?

Answer by: Customer Support on Dec 14, 2025, 6:55 AM

The key dimensions match a 2.00 inch bore setup. It is sized for a 1.625 inch groove diameter, with a piston diameter (F) of 1.998 inches (+0 / -0.002). Bore tolerance is listed at +0.002 / -0, and groove width tolerance is +0.005 / -0.