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Style 1400 Glass-Filled PTFE Piston Seal, 3.75 Inch Bore Diameter, 3.36 Inch Groove Diameter, Inch Groove Width

Description & Features

Designed for hydraulic cylinder applications, this piston seal is constructed from 15% glass-filled PTFE with a rubber energizer, providing reliable sealing performance across a pressure range of 0 to 5,000 PSI and temperatures from -40°F to 220°F. The Style 1400 Glass-Filled PTFE Piston Seal, 3.75 Inch Bore Diameter, 3.36 Inch Groove Diameter features a bore tolerance of ±0.002 inches and a piston diameter of 3.746 inches with a tolerance of ±0.001 inches. The groove diameter measures 3.358 inches, with cross section and seal height tolerances each held to ±0.010 inches. Manufactured by Hercules Sealing Products and cataloged under number C1DH53, this seal is suited for industrial hydraulic equipment where dimensional precision and material durability are required.

SKU: PS1400-60

Supplier Part Number (MPN): PS1400-60

Alternate Part Numbers: C1DH53, MI-01035451, MINO-00407X30032

Specifications

Brand HERCULES® SEALING PRODUCTS	Additional Information 0 to 5000 psi Pressure Rating	Dimensions 0.115 in H	Material Glass Filled PTFE/NBR	Series PS1400 Series

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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
PS1400-64 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: Rex G on Oct 6, 2025, 1:25 PM

got a cylinder with a 3.75 bore, will this style 1400 seal fit the piston and groove sizes you’ve got listed?

Answer by: Customer Support on Oct 8, 2025, 7:30 AM

Fit comes down to the bore, piston diameter, and groove diameter numbers. This seal is matched to a 3.75 inch bore (±0.002), a 3.746 inch piston diameter (±0.001), and a 3.358 inch groove diameter, with the seal height and cross section held to ±0.010.

Question by: Neil D on Sep 12, 2025, 3:48 PM

What's the temperature range this seal can handle? Just makin' sure it'll hold up in my application.

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

It's rated to handle temperatures from -40°F up to 220°F.

Question by: Dwayne A on Jan 2, 2026, 9:10 PM

Got a 3.75 inch bore hydraulic cylinder that needs a new piston seal. This the right fit for that?

Answer by: Customer Support on Jan 4, 2026, 5:42 PM

For a 3.75 inch bore, this seal is built to match that exactly, with a bore tolerance held to plus or minus 0.002 inches. The piston diameter it's sized for is 3.746 inches, with a tighter tolerance of plus or minus 0.001 inches. As long as your cylinder and piston dimensions are in that range, you're looking at a proper fit. The groove diameter on the seal side comes in at 3.358 inches, so double-check your groove dimensions before ordering to make sure everything lines up.

Style 1400 Glass-Filled PTFE Piston Seal, 3.75 Inch Bore Diameter, 3.36 Inch Groove Diameter, Inch Groove Width

Description & Features

Specifications

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Product Questions & Answers (3)