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Style 1800 Glass-Filled PTFE Piston Seal, 3.00 Inch Bore Diameter, 2.44 Inch Groove Diameter, Inch Groove Width

Description & Features

Designed for hydraulic cylinder applications, the Style 1800 Glass-Filled PTFE Piston Seal is built for a 3.00-inch bore with a groove diameter of 2.44 inches and a seal height of 0.269 inches. The 15% glass-filled PTFE sealing element is paired with a rubber energizer, providing consistent radial load and reliable sealing contact against the bore surface.

Rated for pressures from 0 to 5,000 PSI and a temperature range of -40°F to 220°F, this seal suits a broad range of hydraulic cylinder environments. Bore tolerance is held to ±0.002 inches, and the piston diameter of 2.999 inches is specified for pistons without wear rings. Manufactured by Hercules Sealing Products under catalog number C1DH78.

SKU: PS1800-48

Supplier Part Number (MPN): PS1800-48

Alternate Part Numbers: C1DH78, MI-01036733, MINO-00407X30104

Specifications

Bore 3	Bore Tolerance (in) ±0.002	Cross Section Tolerance (in) +0.006 / -0	Brand Hercules Sealing Products	Brand Hercules Sealing Products	Pack Size 1.00	UOM EA	Groove Dia. E 2.44	Groove Width Tolerance (in) ±0.002	Piston Dia. F 3.00	Piston Dia. Tolerance (in) +0/-0.006	Seal Cross Section C 0.09	Seal Height B 0.27	Seal Height Tolerance (in) +0.005 / -0	Supplier Part Number PS1800-48	Alternate Part Numbers Alternate Part Number C1DH78, Alternate Part Number MI-01036733, Alternate Part Number MINO-00407X30104	Product Weight 0.04 lbs

Similar Products

Model Number	Bore	Seal Height B	Seal Cross Section C	Groove Dia. E	Piston Dia. F	Bore Tolerance (in)	Piston Dia. Tolerance (in)	Cross Section Tolerance (in)	Seal Height Tolerance (in)	Groove Width Tolerance (in)
PS1800-20 Style 1800 PTFE Piston Seal	1.25	0.116	0.067	0.94	1.249	±0.002	+0/-0.005	+0.006 / -0	+0.005 / -0	±0.002
PS1800-24 Style 1800 PTFE Piston Seal	1.5	0.116	0.067	1.19	1.499	±0.002	+0/-0.005	+0.006 / -0	+0.005 / -0	±0.002
PS1800-32 Style 1800 PTFE Piston Seal	2	0.116	0.067	1.69	1.999	±0.002	+0/-0.005	+0.006 / -0	+0.005 / -0	±0.002
PS1800-36 Style 1800 PTFE Piston Seal	2.25	0.116	0.067	1.94	2.249	±0.002	+0/-0.005	+0.006 / -0	+0.005 / -0	±0.002
PS1800-40 Style 1800 PTFE Piston Seal	2.5	0.116	0.067	2.19	2.499	±0.002	+0/-0.005	+0.006 / -0	+0.005 / -0	±0.002
PS1800-48 Style 1800 PTFE Piston Seal	3	0.269	0.087	2.44	2.999	±0.002	+0/-0.006	+0.006 / -0	+0.005 / -0	±0.002
PS1800-56 Style 1800 PTFE Piston Seal	3.5	0.269	0.087	2.94	3.499	±0.002	+0/-0.006	+0.006 / -0	+0.005 / -0	±0.002
PS1800-64 Style 1800 PTFE Piston Seal	4	0.269	0.087	3.44	3.999	±0.002	+0/-0.006	+0.006 / -0	+0.005 / -0	±0.002
PS1800-68 Style 1800 PTFE Piston Seal	4.25	0.269	0.087	3.69	4.249	±0.002	+0/-0.006	+0.006 / -0	+0.005 / -0	±0.002
PS1800-72 Style 1800 PTFE Piston Seal	4.5	0.269	0.087	3.94	4.499	±0.002	+0/-0.006	+0.006 / -0	+0.005 / -0	±0.002
PS1800-80 Style 1800 PTFE Piston Seal	5	0.269	0.087	4.44	4.999	±0.002	+0/-0.006	+0.006 / -0	+0.005 / -0	±0.002
PS1800-88 Style 1800 PTFE Piston Seal	5.5	0.362	0.142	4.738	5.499	±0.002	+0/-0.007	±0.005	+0.005 / -0	±0.002
PS1800-96 Style 1800 PTFE Piston Seal	6	0.362	0.142	5.238	5.999	±0.002	+0/-0.007	±0.005	+0.005 / -0	±0.002

Product Questions & Answers (2)

Question by: Lynn P on Jun 1, 2025, 7:38 PM

What kind of temperature range can this seal handle?

Answer by: Customer Support on Jun 3, 2025, 9:57 AM

This Style 1800 seal is rated to handle temperatures from -40°F up to 220°F.

Question by: Lee P on Aug 18, 2025, 8:11 PM

trying to swap out a piston seal on a 3 inch bore cylinder, are these dimensions gonna line up right

Answer by: Customer Support on Aug 20, 2025, 8:26 AM

The key callouts are a 3.00 inch bore with a bore tolerance of ±0.002 inch, a 2.44 inch groove diameter, and a 0.269 inch seal height. The seal cross section is 0.087 inch. It also lists a piston diameter of 2.999 inch with a +0/-0.006 tolerance, and that piston diameter is specified for pistons without wear rings.