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Style PSC Polyurethane Double-Acting Piston Seal, 1.50 Inch Bore Diameter, 1.25 Inch Groove Diameter, Inch Groove Width

Description & Features

Manufactured by Hercules Sealing Products, this double-acting piston seal is constructed with a 95A polyurethane seal body and a 70A nitrile energizer, providing reliable performance across a pressure range of 0 to 5,000 PSI and temperatures from -65°F to 220°F. The groove diameter measures 1.254 inches, with a piston diameter of 1.498 inches and a seal height of 0.265 inches. Bore tolerance is held to +0.002/-0 inches, and groove width tolerance is +0.005/-0 inches, supporting precise fitment in demanding hydraulic cylinder applications.

The Style PSC Polyurethane Double-Acting Piston Seal, 1.50 Inch Bore Diameter, 1.25 Inch Groove Diameter is designed for use in hydraulic cylinders where bidirectional sealing is required. The wide base profile contributes to stable groove seating and consistent seal contact under dynamic load conditions.

SKU: PSC-218-WB

Supplier Part Number (MPN): PSC-218-WB

Alternate Part Numbers: C1KM96

Specifications

Bore 1.50	Bore Tolerance (in) +0.002/-0	Brand Hercules Sealing Products	Brand Hercules Sealing Products	Pack Size 1.00	UOM EA	Groove Dia. E 1.25	Groove Width Tolerance (in) +0.005 / -0	Piston Dia. F 1.50	Piston Dia. Tolerance (in) +0/-0.002	Seal Height B 0.27	Supplier Part Number PSC-218-WB	Alternate Part Numbers Alternate Part Number C1KM96	Product Weight 0.03 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 (1)

Question by: Peggy A on Jun 27, 2025, 7:10 PM

got a cylinder with a 1.50 bore. is this PSC-218-WB the right size piston seal for it?

Answer by: Customer Support on Jun 29, 2025, 7:08 AM

Fit comes down to matching the bore and groove dimensions. This seal is sized for a 1.50 inch bore, with a 1.254 inch groove diameter, a 1.498 inch piston diameter, and a 0.265 inch seal height. The tolerances called out are bore +0.002/-0 and groove width +0.005/-0, with piston diameter tolerance +0/-0.002.