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Style 1400 Glass-Filled PTFE Piston Seal, 3.50 Inch Bore Diameter, 3.11 Inch Groove Diameter, Inch Groove Width

Description & Features

Designed for high-performance hydraulic applications, the Style 1400 Glass-Filled PTFE Piston Seal offers superior sealing capabilities with a bore diameter of 3.50 inches and a groove diameter of 3.11 inches. This piston seal is constructed from 15% glass-filled PTFE, providing excellent chemical resistance and durability, complemented by a rubber energizer for enhanced performance.

Capable of handling pressures from 0 to 5,000 PSI and operating effectively in temperatures ranging from -40°F to 220°F, this seal is ideal for demanding environments. The precision tolerances of ±0.002 inches for bore and groove width ensure reliable sealing in various industrial settings.

SKU: PS1400-56

Supplier Part Number (MPN): PS1400-56

Alternate Part Numbers: C1DH52, MI-01035370, MINO-00407X30028

Specifications

Bore 3.50	Bore Tolerance (in) ±0.002	Cross Section Tolerance (in) ±0.010	Brand Hercules Sealing Products	Brand Hercules Sealing Products	Pack Size 1.00	UOM EA	Groove Dia. E 3.11	Groove Width Tolerance (in) ±0.002	Piston Dia. F 3.50	Piston Dia. Tolerance (in) ±0.001	Seal Height Tolerance (in) ±0.010	Supplier Part Number PS1400-56	Alternate Part Numbers Alternate Part Number C1DH52, Alternate Part Number MI-01035370, Alternate Part Number MINO-00407X30028	Product Weight 0.02 lbs

Similar Products

Model Number	Bore	Groove Dia. E	Piston Dia. F	Bore Tolerance (in)	Cross Section Tolerance (in)	Seal Height Tolerance (in)	Piston Dia. Tolerance (in)	Groove Width Tolerance (in)
PS1400-40 Style 1400 PTFE Piston Seal	2.5	2.108	2.496	±0.002	±0.010	±0.010	±0.001	±0.002
PS1400-56 Style 1400 PTFE Piston Seal	3.5	3.108	3.496	±0.002	±0.010	±0.010	±0.001	±0.002
PS1400-80 Style 1400 PTFE Piston Seal	5	4.608	4.996	±0.002	±0.010	±0.010	±0.001	±0.002
PS1400-24 Style 1400 PTFE Piston Seal	1.5	1.24	1.497	±0.002	±0.005	±0.005	±0.001	±0.002
PS1400-26 Style 1400 PTFE Piston Seal	1.625	1.233	1.622	±0.002	±0.010	±0.010	±0.001	±0.002
PS1400-28 Style 1400 PTFE Piston Seal	1.75	1.358	1.747	±0.002	±0.010	±0.010	±0.001	±0.002
PS1400-32 Style 1400 PTFE Piston Seal	2	1.608	1.996	±0.002	±0.010	±0.010	±0.001	±0.002
PS1400-36 Style 1400 PTFE Piston Seal	2.25	1.858	2.246	±0.002	±0.010	±0.010	±0.001	±0.002
PS1400-44 Style 1400 PTFE Piston Seal	2.75	2.358	2.746	±0.002	±0.010	±0.010	±0.001	±0.002
PS1400-48 Style 1400 PTFE Piston Seal	3	2.608	2.996	±0.002	±0.010	±0.010	±0.001	±0.002
PS1400-52 Style 1400 PTFE Piston Seal	3.25	2.858	3.246	±0.002	±0.010	±0.010	±0.001	±0.002
PS1400-60 Style 1400 PTFE Piston Seal	3.75	3.358	3.746	±0.002	±0.010	±0.010	±0.001	±0.002
PS1400-64 Style 1400 PTFE Piston Seal	4	3.608	3.996	±0.002	±0.010	±0.010	±0.001	±0.002
PS1400-72 Style 1400 PTFE Piston Seal	4.5	4.108	4.496	±0.002	±0.010	±0.010	±0.001	±0.002
PS1400-96 Style 1400 PTFE Piston Seal	6	5.482	5.996	±0.002	±0.005	±0.005	±0.001	±0.002

Product Questions & Answers (3)

Question by: Denise S on Mar 22, 2026, 7:55 AM

What size groove does this fit into? I wanna make sure it's gonna work for my cylinder.

Answer by: Customer Support on Mar 24, 2026, 6:22 AM

It'll fit a groove diameter of 3.11 inches, give or take a couple thousandths of an inch. The groove width should be right around an inch as well.

Question by: Roy P on Jun 20, 2025, 6:13 PM

does this seal work up to 5000 psi or is that just the top end before it starts leaking down

Answer by: Customer Support on Jun 22, 2025, 6:08 AM

Rated from 0 to 5,000 PSI, so yes, 5,000 is the ceiling on the pressure range. Running right at that upper limit for extended periods is generally harder on any seal than staying comfortably below it, but the rating itself covers the full range stated.

Question by: Floyd P on Dec 2, 2025, 5:19 PM

trying to swap out a piston seal, are these dims gonna match a 3.50 bore setup?

Answer by: Customer Support on Dec 4, 2025, 12:12 PM

The key callouts here are a 3.50 inch bore with a ±0.002 tolerance, a groove diameter of 3.108 inches, and a piston diameter of 3.496 inches with a ±0.001 tolerance. If your cylinder and piston match those numbers, this Style 1400 seal is sized for that arrangement.