Piston Seal, 2.625X3.00X.265

Piston Seal, 2.625X3.00X.265

The PSM-334 Piston Seal Assembly is a high-performance hydraulic piston seal sized 2.625" ID x 3.000" OD x 0.265" height, designed for high-pressure, extrusion-resistant sealing while using the same groove dimensions as a standard O-ring/T-seal. Molded from 93A polyurethane with a 70A nitrile energizer, it resists rolling and twisting and installs with an easy two-step snap-in—no resizing required, no drama, and no “why won’t this go in?” monologue.

Country of Origin
Varies by production batch

Key Features / Specifications

• Product: PSM-334
• Product Type: PSM piston seal assembly
• Cross References / MFG #: H775-334, PSP-334A, CSM-334, PSP-334N 4622, DAGI300262-280, 3331382, 4304BP334A
• Nominal Size (ID x OD x Height): 2.625 in x 3.000 in x 0.265 in (2-5/8 x 3 x .265)
• Material: 93A urethane seal with 70A nitrile energizer
• Temperature Range: -40° to +220°F
• Pressure Range: 0 to 5,000 PSI
• Max Speed: 3 ft/sec
• O-Ring Dash Number: -334
• Groove Diameter (H): 2.624 in
• Groove Width (D): 0.280 in
• Bore: 2.999 in
• Piston Diameter (I): 2.997 in (dimensions given for pistons without wear rings)
• Design Notes: Extrusion resistant, resistant to rolling/twisting, snap-in installation, uses O-ring to T-seal groove dimensions
• Backup Ring Option: One or two Style 575 back-up rings may be used for wider grooves
• Weight: 0.00820000 lb

Ideal For

• Hydraulic cylinders needing a 2.625" ID / 3.000" OD piston seal with standard O-ring/T-seal groove compatibility
• High-pressure applications up to 5,000 PSI where extrusion resistance matters
• Systems where seal stability (less rolling/twisting) improves reliability
• Repairs where you want fast installation without resizing tools or extra wrestling
• Equipment operating across wide temperature swings from -40°F to +220°F