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Style PSC Polyurethane Double-Acting Piston Seal, 5.00 Inch Bore Diameter, 4.64 Inch Groove Diameter, Inch Groove Width

Description & Features

Experience reliable sealing performance with the Style PSC Polyurethane Double-Acting Piston Seal. Engineered for a 5.00-inch bore diameter and a 4.64-inch groove diameter, this piston seal offers precision fitment in hydraulic applications. Constructed from durable 95A polyurethane with a 70A nitrile energizer, it ensures long-lasting resilience and effective sealing under demanding conditions. The seal accommodates pressures up to 5,000 PSI and operates efficiently within a temperature range of -65°F to 220°F, making it suitable for diverse industrial environments.

Designed specifically for pistons without wear rings, the seal's groove diameter and width tolerances provide optimal performance. The Hercules Sealing Products brand assures quality and reliability, with a piston diameter tolerance of +0/-0.004 inches for precise application. Whether you're dealing with extreme temperatures or high-pressure systems, this piston seal remains a dependable choice for maintaining hydraulic integrity.

SKU: PSC-350

Supplier Part Number (MPN): PSC-350

Alternate Part Numbers: C1KM99

Specifications

Bore 5	Bore Tolerance (in) +0.004/-0	Brand Hercules Sealing Products	Brand Hercules Sealing Products	Pack Size 1.00	UOM EA	Groove Dia. E 4.64	Groove Width Tolerance (in) +0.005 / -0	Piston Dia. F 5.00	Piston Dia. Tolerance (in) +0/-0.004	Seal Height B 0.26	Supplier Part Number PSC-350	Alternate Part Numbers Alternate Part Number C1KM99	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 (2)

Question by: Wayne S on May 25, 2025, 8:07 PM

What kind of temperatures can this seal handle?

Answer by: Customer Support on May 27, 2025, 6:45 AM

It's rated to handle temperatures from -65°F all the way up to 220°F.

Question by: Debbie W on Sep 18, 2025, 5:05 PM

got a 5 inch bore cylinder, is this PSC-350 the right size seal or am i gonna be fighting it

Answer by: Customer Support on Sep 20, 2025, 9:45 AM

For a 5.00 inch bore, this seal is sized to match that bore and it’s intended to run on a piston diameter of 4.999 inches with a piston diameter tolerance of +0/-0.004 inches. The groove diameter spec is 4.636 inches, so if your piston and groove match those numbers, it should be a proper fit instead of a forced one.