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Style 2700 Polyurethane Piston Seal, 4.00 Inch Bore Diameter, 3.44 Inch Groove Diameter, Inch Groove Width

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Bore
4
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
3.44
Groove Width Tolerance (in)
±0.002
Piston Dia. F
4.00
Piston Dia. Tolerance (in)
+0/-0.014
Seal Cross Section C
0.09
Seal Height B
0.27
Seal Height Tolerance (in)
+0.005 / -0
Supplier Part Number
PS2700-64
Alternate Part Numbers
Alternate Part Number C1DH98, Alternate Part Number MI-01039106, Alternate Part Number MINO-00407X30304
Product Weight
0.03 lbs
Product Questions & Answers 3

Product Questions & Answers

got a 4.00 bore cylinder, is this PS2700-64 gonna fit the piston and groove i’ve got?
Question by: Stan T on Dec 15, 2025, 6:35 PM
Fit comes down to the bore and groove dimensions. This seal is sized for a 4.00 inch bore (±0.002), with a 3.44 inch groove diameter, and it matches a piston diameter of 3.999 inch with a +0/-0.014 tolerance. The seal cross section is 0.087 and seal height is 0.269 (+0.005/-0), so it is built around those groove and piston dimensions.
Answer by: Customer Support on Dec 16, 2025, 9:18 PM
What kind of temperatures can this seal hold up in? Got equipment running in some pretty harsh conditions and need something that won't give out on me.
Question by: Ralph E on Mar 5, 2026, 9:42 AM
Rated for -40°F up to 220°F, so it handles both cold startups and sustained heat without breaking down. The glass and PTFE filled polyurethane construction holds up well across that range, and the rubber energizer keeps the sealing pressure consistent even as temperatures shift during operation.
Answer by: Customer Support on Mar 7, 2026, 6:58 AM
What size bore does this seal fit? Just want to make sure it's the right one for my cylinder.
Question by: Sherry H on Dec 22, 2025, 10:49 AM
This piston seal is made to fit a 4.00-inch bore diameter. It's also got a 3.44-inch groove diameter, so double-check that as well.
Answer by: Customer Support on Dec 24, 2025, 8:12 AM

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Model Number Bore Seal Height B Seal Cross Section C Groove Width D Groove Dia. E Piston Dia. F Groove Width Tolerance (in) Seal Height Tolerance (in) Cross Section Tolerance (in) Piston Dia. Tolerance (in) Bore Tolerance (in) Price Buy Now
PS2700-112 7 0.362 0.142 6.238 6.999 ±0.002 +0.005 / -0 ±0.005 +0/-0.014 ±0.002
PS2700-32 2 0.116 0.067 1.69 1.999 ±0.002 +0.005 / -0 +0.006 / -0 +0/-0.009 ±0.002
PS2700-56 3.5 0.269 0.087 2.94 3.499 ±0.002 +0.005 / -0 +0.006 / -0 +0/-0.014 ±0.002
PS2700-64 4 0.269 0.087 3.44 3.999 ±0.002 +0.005 / -0 +0.006 / -0 +0/-0.014 ±0.002
PS2700-72 4.5 0.269 0.087 3.94 4.499 ±0.002 +0.005 / -0 +0.006 / -0 +0/-0.014 ±0.002
PS2700-80 5 0.269 0.087 4.44 4.999 ±0.002 +0.005 / -0 +0.006 / -0 +0/-0.014 ±0.002
PS2700-96 6 0.362 0.142 5.238 5.999 ±0.002 +0.005 / -0 ±0.005 +0/-0.014 ±0.002