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Style 1800 Glass-Filled PTFE Piston Seal, 1.25 Inch Bore Diameter, 0.94 Inch Groove Diameter, Inch Groove Width

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Description & Features

Designed for hydraulic cylinder applications, the Style 1800 Glass-Filled PTFE Piston Seal is built for a 1.25-inch bore diameter with a groove diameter of 0.94 inches. The seal combines a 15% glass-filled PTFE sealing element with a rubber energizer, providing reliable dynamic sealing performance across a pressure range of 0 to 5,000 PSI and a temperature range of -40°F to 220°F.

Manufactured by Hercules Sealing Products, this Style 1800 seal carries a seal cross section of 0.067 inches and a seal height of 0.116 inches. The piston diameter specification of 1.249 inches applies to pistons configured without wear rings. Close tolerances on bore, groove width, and seal height support consistent fit and performance in demanding hydraulic service.

SKU: PS1800-20

Supplier Part Number (MPN): PS1800-20

Alternate Part Numbers: C1DH73, MI-01038248, MINO-00407X30231

Specifications

Bore
1.25
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
0.94
Groove Width Tolerance (in)
±0.002
Piston Dia. F
1.25
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
PS1800-20
Alternate Part Numbers
Alternate Part Number C1DH73, Alternate Part Number MI-01038248, Alternate Part Number MINO-00407X30231
Product Weight
0.01 lbs

Similar Products

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 Action
Style 1800 Glass-Filled PTFE Piston Seal, 1.25 Inch Bore Diameter, 0.94 Inch Groove Diameter, Inch Groove Width

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

Style 1800 Glass-Filled PTFE Piston Seal, 1.50 Inch Bore Diameter, 1.19 Inch Groove Diameter, Inch Groove Width

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

Style 1800 Glass-Filled PTFE Piston Seal, 2.00 Inch Bore Diameter, 1.69 Inch Groove Diameter, Inch Groove Width

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

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

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

Style 1800 Glass-Filled PTFE Piston Seal, 2.50 Inch Bore Diameter, 2.19 Inch Groove Diameter, Inch Groove Width

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

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

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

Style 1800 Glass-Filled PTFE Piston Seal, 3.50 Inch Bore Diameter, 2.94 Inch Groove Diameter, Inch Groove Width

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

Style 1800 Glass-Filled PTFE Piston Seal, 4.00 Inch Bore Diameter, 3.44 Inch Groove Diameter, Inch Groove Width

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

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

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

Style 1800 Glass-Filled PTFE Piston Seal, 4.50 Inch Bore Diameter, 3.94 Inch Groove Diameter, Inch Groove Width

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

Style 1800 Glass-Filled PTFE Piston Seal, 5.00 Inch Bore Diameter, 4.44 Inch Groove Diameter, Inch Groove Width

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

Style 1800 Glass-Filled PTFE Piston Seal, 5.50 Inch Bore Diameter, 4.74 Inch Groove Diameter, Inch Groove Width

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

Style 1800 Glass-Filled PTFE Piston Seal, 6.00 Inch Bore Diameter, 5.24 Inch Groove Diameter, Inch Groove Width

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: Kurt R on Jul 11, 2025, 11:41 AM
got a cylinder with a 1.25 bore and a 0.94 groove dia, is this the right Style 1800 seal for it?
Answer by: Customer Support on Jul 13, 2025, 6:33 AM
The key callouts match what you listed: it is a Style 1800 piston seal sized for a 1.25 inch bore with a 0.94 inch groove diameter. It also has a 0.067 inch seal cross section and 0.116 inch seal height, with tight tolerances on the bore, groove width, and seal height to help it seat consistently.
Question by: Ross H on Jun 17, 2025, 8:26 AM
Reckon this seal will fit a cylinder with a 1.25-inch bore? Just wanna make sure before I order.
Answer by: Customer Support on Jun 18, 2025, 3:24 PM
This Style 1800 seal is indeed made for cylinders with a 1.25-inch bore. The product description notes the groove diameter should be 0.94 inches.