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Style 1800 Glass-Filled PTFE Piston Seal, 2.25 Inch Bore Diameter, 1.94 Inch Groove Diameter, Inch Groove Width

Description & Features

This Style 1800 Glass-Filled PTFE Piston Seal has a 2.25 inch bore diameter and a 1.94 inch groove diameter. It is suitable for use in group applications with pressures ranging from 0 to 5,000 PSI and temperatures from -40°F to 220°F.

The piston seal features a 15% glass-filled PTFE seal and a rubber energizer. It has a seal cross section of 0.067 inches and a seal height of 0.116 inches. The bore tolerance is ±0.002 inches, and the groove width tolerance is ±0.002 inches.

SKU: PS1800-36

Supplier Part Number (MPN): PS1800-36

Alternate Part Numbers: C1DH76

Specifications

Bore 2.25	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 1.94	Groove Width Tolerance (in) ±0.002	Piston Dia. F 2.25	Piston Dia. Tolerance (in) +0/-0.005	Seal Cross Section C 0.07	Seal Height B 0.12	Seal Height Tolerance (in) +0.005 / -0	Supplier Part Number PS1800-36	Alternate Part Numbers Alternate Part Number C1DH76	Product Weight 0.03 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: Tammy A on Aug 30, 2025, 11:57 AM

trying to swap out a piston seal, do these dimensions match a 2.25 bore with a 1.94 groove dia?

Answer by: Customer Support on Aug 31, 2025, 7:35 PM

The key callouts on this one are a 2.25 inch bore and a 1.94 inch groove diameter, with a 0.067 inch seal cross section and 0.116 inch seal height. Bore tolerance is ±0.002 inch and groove width tolerance is ±0.002 inch, so it is meant for fairly tight machining.

Question by: Lynn B on Dec 4, 2025, 7:07 AM

What's the deal with piston diameter, especially when wear rings ain't in the picture?

Answer by: Customer Support on Dec 6, 2025, 7:05 AM

For pistons lacking wear rings, the provided piston diameter F dimensions are what you'll want to pay attention to.