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Style 1600 Glass-Filled PTFE Piston Seal, 3.25 Inch Bore Diameter, 2.85 Inch Groove Diameter, Inch Groove Width

Description & Features

This Style 1600 Glass-Filled PTFE Piston Seal is designed for a 3.25 inch bore and a 2.85 inch groove diameter with a groove width of 0. It is manufactured by Hercules Sealing Products and identified by catalog number C1DH68. The seal cross section measures 0.085 inches in height.

Constructed with a 15% glass-filled PTFE seal and a rubber energizer, this piston seal is suitable for pressures ranging from 0 to 5,000 PSI and temperatures from -40°F to 220°F. Designed for pistons without wear rings, the piston diameter (F) measures 3.249 inches.

SKU: PS1600-52

Supplier Part Number (MPN): PS1600-52

Alternate Part Numbers: C1DH68

Specifications

Bore 3.25	Bore Tolerance (in) ±0.001	Cross Section Tolerance (in) +0.005 / -0	Brand Hercules Sealing Products	Brand Hercules Sealing Products	Pack Size 1.00	UOM EA	Groove Dia. E 2.85	Groove Width Tolerance (in) +0.003 / -0	Piston Dia. F 3.25	Piston Dia. Tolerance (in) +0/-0.004	Seal Cross Section C 0.09	Seal Height B 0.15	Seal Height Tolerance (in) +0.005 / -0	Supplier Part Number PS1600-52	Alternate Part Numbers Alternate Part Number C1DH68	Product Weight 0.03 lbs

Similar Products

Model Number	Bore	Seal Height B	Seal Cross Section C	Groove Dia. E	Piston Dia. F	Groove Width Tolerance (in)	Seal Height Tolerance (in)	Bore Tolerance (in)	Cross Section Tolerance (in)	Piston Dia. Tolerance (in)
PS1600-32 Style 1600 PTFE Piston Seal	2	0.12	0.055	1.723	1.999	+0.003 / -0	+0.005 / -0	±0.001	+0.005 / -0	+0/-0.003
PS1600-36 Style 1600 PTFE Piston Seal	2.25	0.12	0.055	1.937	2.249	+0.003 / -0	+0.005 / -0	±0.001	+0.005 / -0	+0/-0.003
PS1600-40 Style 1600 PTFE Piston Seal	2.5	0.12	0.055	2.223	2.499	+0.003 / -0	+0.005 / -0	±0.001	+0.005 / -0	+0/-0.003
PS1600-44 Style 1600 PTFE Piston Seal	2.75	0.15	0.085	2.348	2.749	+0.003 / -0	+0.005 / -0	±0.001	+0.005 / -0	+0/-0.004
PS1600-48 Style 1600 PTFE Piston Seal	3	0.15	0.085	2.603	2.999	+0.003 / -0	+0.005 / -0	±0.001	+0.005 / -0	+0/-0.004
PS1600-52 Style 1600 PTFE Piston Seal	3.25	0.15	0.085	2.853	3.249	+0.003 / -0	+0.005 / -0	±0.001	+0.005 / -0	+0/-0.004
PS1600-56 Style 1600 PTFE Piston Seal	3.5	0.15	0.085	3.103	3.499	+0.003 / -0	+0.005 / -0	±0.001	+0.005 / -0	+0/-0.004
PS1600-64 Style 1600 PTFE Piston Seal	4	0.15	0.085	3.6	3.999	+0.003 / -0	+0.005 / -0	±0.001	+0.005 / -0	+0/-0.004
PS1600-68 Style 1600 PTFE Piston Seal	4.25	0.15	0.085	3.853	4.249	+0.003 / -0	+0.005 / -0	±0.001	+0.005 / -0	+0/-0.004

Product Questions & Answers (3)

Question by: Kurt D on Feb 8, 2026, 7:34 PM

Reckon this seal will fit my piston if it's sittin' right at 3.25 inches?

Answer by: Customer Support on Feb 10, 2026, 6:32 AM

This Style 1600 seal is made for a 3.25-inch bore. The listed bore tolerance is plus or minus 0.001 inches, so if your piston is exactly 3.25 inches, it should be a good fit.

Question by: Brett B on Sep 10, 2025, 6:16 PM

i got a 3.25 bore cylinder, will this Style 1600 seal fit the groove right?

Answer by: Customer Support on Sep 12, 2025, 2:54 PM

Fit comes down to matching the bore and groove dimensions. This seal is for a 3.25 inch bore with a 2.853 inch groove diameter, and it uses a 0.085 inch cross section. It also lists a piston diameter (F) of 3.249 inches for pistons without wear rings.

Question by: Ricky M on Nov 27, 2025, 3:22 PM

Got a cylinder with a 3.25 inch bore that needs a new piston seal. This one rated for any real pressure, or is it more of a light-duty part?

Answer by: Customer Support on Nov 28, 2025, 9:26 PM

Rated for pressures up to 5,000 PSI, so it handles plenty of working load for most hydraulic cylinder applications. The 15% glass-filled PTFE construction paired with a rubber energizer gives it solid resistance to deformation under pressure. For a standard 3.25 inch bore with a piston diameter of 3.249 inches, this seal fits right in without wear rings, which is worth knowing before you go cutting any grooves.