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

Description & Features

Designed for efficiency and reliability, the Style 2700 Polyurethane Piston Seal is an essential component for hydraulic systems demanding precision. This robust seal fits a 4.00-inch bore diameter with a 3.44-inch groove diameter, ensuring compatibility with a wide range of piston applications. Crafted from a durable glass and PTFE filled polyurethane, it features a rubber energizer to enhance sealing performance under pressures ranging from 0 to 5,000 PSI. With a temperature tolerance from -40°F to 220°F, this piston seal excels in diverse industrial environments.

Manufactured by Hercules Sealing Products, this piston seal delivers exceptional longevity and resistance to wear, making it suitable for high-demand settings. The style and materials used are specifically selected to provide reliable sealing capabilities, minimizing downtime and maintenance costs. This seal's precision-engineered tolerances ensure a secure fit and optimal function in hydraulic assemblies.

SKU: PS2700-64

Supplier Part Number (MPN): PS2700-64

Alternate Part Numbers: C1DH98, MI-01039106, MINO-00407X30304

Specifications

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

Similar Products

Model Number	Bore	Seal Height B	Seal Cross Section C	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)
PS2700-112 Polyurethane Piston Seal	7	0.362	0.142	6.238	6.999	±0.002	+0.005 / -0	±0.005	+0/-0.014	±0.002
PS2700-32 Polyurethane Piston Seal	2	0.116	0.067	1.69	1.999	±0.002	+0.005 / -0	+0.006 / -0	+0/-0.009	±0.002
PS2700-56 Polyurethane Piston Seal	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 Polyurethane Piston Seal	4	0.269	0.087	3.44	3.999	±0.002	+0.005 / -0	+0.006 / -0	+0/-0.014	±0.002
PS2700-72 Polyurethane Piston Seal	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 Polyurethane Piston Seal	5	0.269	0.087	4.44	4.999	±0.002	+0.005 / -0	+0.006 / -0	+0/-0.014	±0.002
PS2700-96 Polyurethane Piston Seal	6	0.362	0.142	5.238	5.999	±0.002	+0.005 / -0	±0.005	+0/-0.014	±0.002

Product Questions & Answers (3)

Question by: Stan T on Dec 15, 2025, 6:35 PM

got a 4.00 bore cylinder, is this PS2700-64 gonna fit the piston and groove i’ve got?

Answer by: Customer Support on Dec 16, 2025, 9:18 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.

Question by: Ralph E on Mar 5, 2026, 9:42 AM

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.

Answer by: Customer Support on Mar 7, 2026, 6:58 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.

Question by: Sherry H on Dec 22, 2025, 10:49 AM

What size bore does this seal fit? Just want to make sure it's the right one for my cylinder.

Answer by: Customer Support on Dec 24, 2025, 8:12 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.