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

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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
Product Questions & Answers 1

Product Questions & Answers

got a cylinder with a 4.25 bore, is this the right piston seal size or am i lookin at it wrong
Question by: Tony F on Jun 8, 2025, 4:14 PM
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.
Answer by: Customer Support on Jun 10, 2025, 6:00 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