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

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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
Product Questions & Answers 2

Product Questions & Answers

trying to swap out a piston seal, do these dimensions match a 2.25 bore with a 1.94 groove dia?
Question by: Tammy A on Aug 30, 2025, 11:57 AM
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.
Answer by: Customer Support on Aug 31, 2025, 7:35 PM
What's the deal with piston diameter, especially when wear rings ain't in the picture?
Question by: Lynn B on Dec 4, 2025, 7:07 AM
For pistons lacking wear rings, the provided piston diameter F dimensions are what you'll want to pay attention to.
Answer by: Customer Support on Dec 6, 2025, 7:05 AM

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Model Number Bore Seal Height B Seal Cross Section C Groove Width D 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) Price Buy Now
PS1800-20 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 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 2 0.116 0.067 1.69 1.999 ±0.002 +0/-0.005 +0.006 / -0 +0.005 / -0 ±0.002
PS1800-36 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 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 3 0.269 0.087 2.44 2.999 ±0.002 +0/-0.006 +0.006 / -0 +0.005 / -0 ±0.002
PS1800-56 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 4 0.269 0.087 3.44 3.999 ±0.002 +0/-0.006 +0.006 / -0 +0.005 / -0 ±0.002
PS1800-68 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 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 5 0.269 0.087 4.44 4.999 ±0.002 +0/-0.006 +0.006 / -0 +0.005 / -0 ±0.002
PS1800-88 5.5 0.362 0.142 4.738 5.499 ±0.002 +0/-0.007 ±0.005 +0.005 / -0 ±0.002
PS1800-96 6 0.362 0.142 5.238 5.999 ±0.002 +0/-0.007 ±0.005 +0.005 / -0 ±0.002