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Style 1800 Glass-Filled PTFE Piston Seal, 4.25 Inch Bore Diameter, 3.69 Inch Groove Diameter, Inch Groove Width

Description & Features

This Style 1800 Glass-Filled PTFE Piston Seal is designed for a 4.25 inch bore diameter and a 3.69 inch groove diameter.

Manufactured by Hercules Sealing Products, this piston seal features a 15% glass-filled PTFE seal and a rubber energizer. It maintains reliable sealing performance within a temperature range of -40°F to 220°F and can withstand pressures from 0 to 5,000 PSI.

SKU: PS1800-68

Supplier Part Number (MPN): PS1800-68

Alternate Part Numbers: C1DH82, MI-01037004, MINO-00407X30124

Specifications

Bore 4.25	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 3.69	Groove Width Tolerance (in) ±0.002	Piston Dia. F 4.25	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 PS1800-68	Alternate Part Numbers Alternate Part Number C1DH82, Alternate Part Number MI-01037004, Alternate Part Number MINO-00407X30124	Product Weight 0.08 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 (1)

Question by: Tony F on Jun 8, 2025, 4:14 PM

got a cylinder with a 4.25 bore, is this the right piston seal size or am i lookin at it wrong

Answer by: Customer Support on Jun 10, 2025, 6:00 AM

It matches a 4.25 inch bore and is intended to run in a 3.69 inch groove diameter with a 0.087 inch seal cross section. The related piston diameter dimension is 4.249 inches with a +0/-0.006 tolerance.