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

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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
Product Questions & Answers 3

Product Questions & Answers

What size groove does this fit into? I wanna make sure it's gonna work for my cylinder.
Question by: Denise S on Mar 22, 2026, 7:55 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.
Answer by: Customer Support on Mar 24, 2026, 6:22 AM
does this seal work up to 5000 psi or is that just the top end before it starts leaking down
Question by: Roy P on Jun 20, 2025, 6:13 PM
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.
Answer by: Customer Support on Jun 22, 2025, 6:08 AM
trying to swap out a piston seal, are these dims gonna match a 3.50 bore setup?
Question by: Floyd P on Dec 2, 2025, 5:19 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.
Answer by: Customer Support on Dec 4, 2025, 12:12 PM

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Model Number Bore Groove Width D 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) Price Buy Now
PS1400-40 2.5 2.108 2.496 ±0.002 ±0.010 ±0.010 ±0.001 ±0.002
PS1400-56 3.5 3.108 3.496 ±0.002 ±0.010 ±0.010 ±0.001 ±0.002
PS1400-80 5 4.608 4.996 ±0.002 ±0.010 ±0.010 ±0.001 ±0.002
PS1400-24 1.5 1.24 1.497 ±0.002 ±0.005 ±0.005 ±0.001 ±0.002
PS1400-26 1.625 1.233 1.622 ±0.002 ±0.010 ±0.010 ±0.001 ±0.002
PS1400-28 1.75 1.358 1.747 ±0.002 ±0.010 ±0.010 ±0.001 ±0.002
PS1400-32 2 1.608 1.996 ±0.002 ±0.010 ±0.010 ±0.001 ±0.002
PS1400-36 2.25 1.858 2.246 ±0.002 ±0.010 ±0.010 ±0.001 ±0.002
PS1400-44 2.75 2.358 2.746 ±0.002 ±0.010 ±0.010 ±0.001 ±0.002
PS1400-48 3 2.608 2.996 ±0.002 ±0.010 ±0.010 ±0.001 ±0.002
PS1400-52 3.25 2.858 3.246 ±0.002 ±0.010 ±0.010 ±0.001 ±0.002
PS1400-60 3.75 3.358 3.746 ±0.002 ±0.010 ±0.010 ±0.001 ±0.002
PS1400-64 4 3.608 3.996 ±0.002 ±0.010 ±0.010 ±0.001 ±0.002
PS1400-72 4.5 4.108 4.496 ±0.002 ±0.010 ±0.010 ±0.001 ±0.002
PS1400-96 6 5.482 5.996 ±0.002 ±0.005 ±0.005 ±0.001 ±0.002