Piston seal PDC

Description

The PDC is a piston sealing profile with a rigid body, spring and rubber lip. It is designed to work in both pneumatic and hydraulic applications, providing reliable sealing even at low pressures and low speed.

Assembly

To install the PDC, place the profile in the piston housing, ensuring the correct lip orientation and avoiding twisting or damage. Lubricate the contact surfaces with a product compatible with the pneumatic or hydraulic medium. Periodically check wear, leakage and system cleanliness.

Advantages

Effective sealing in pneumatic and hydraulic pistons.
Compact design with rigid body, spring and elastomer lip.
Suitable for working pressures up to 16 bar in pneumatic systems and up to 60 bar in hydraulic systems.
Reduces the risk of internal leakage.
Prevents metallic contact between cylinder and piston.
Works properly with suitable lubrication.
Can be adapted to different materials and hardness ranges.
Supports stable installation in the piston housing.

Materials

The PDC profile can be manufactured in NBR and FKM. According to the available information, applicable hardness ranges are 80/85 Shore A for standard applications and 90/98 Shore A when higher sealing performance and resistance are required.

Technical data

NO	Ød	ØD	B	C	Ød1	k	b
JP-32825 PDC	8	32	25	5	18.5	3	3.5
JP-35818 PDC	8	35	18	5	20	4	4.3
JP-35826 PDC	8	35	26	5	20	4	4.3
JP-501025 PDC	10	50	25	5	26.5	4	4.5
JP-551025 PDC	10	55	25	5	31.5	4	4.5
JP-551425 PDC	14	55	25	5	31.5	4	4.5
JP-601226 PDC	12	60	26	5	37	4	4.5
JP-601826 PDC	18	60	26	5	37.3	5	5.4
JP-751230 PDC	12	75	30	5	50	5	5.9
JP-801230 PDC	12	80	30	5	55	5	5.5
JP-851235 PDC	12	85	35	5	60	6	6.5
JP-1001235 PDC	12	100	35	7	72	6	7.1
JP-1202040 PDC	20	120	40	7	90	8	9
JP-1252040 PDC	20	125	40	7	90	8	9
JP-1802040 PDC	20	180	40	7	140	10	11
JP-2503040 PDC	30	250	40	10	190	12	13

Technical drawing and installation parameters of the PDC piston seal

This technical diagram defines the dimensions and geometric variables that are essential for the correct selection and installation of the PDC piston seal, a sealing profile with a rigid body, a spring and a rubber lip, suitable for both pneumatic and hydraulic applications. It shows the critical dimensions linked to the specification tables, such as the inside diameter (Ød), the outside diameter (ØD) and the width of the seal profile (B), together with the groove depth (C), the groove bottom diameter (Ød1) and the partial widths of the profile (b1 and b2). Complying with these dimensions ensures accurate positioning, stable installation in the piston groove and optimum static and dynamic sealing performance, even at low pressure and low speed.

Three-dimensional view and components of the PDC piston seal

This 3D illustration shows you the basic structure of the PDC piston seal. You can clearly see its three elements: the rigid body that gives shape and stability to the assembly, the spring that keeps the lip pressed against the sliding surface and the elastomer lip that does the sealing. This combination achieves effective sealing on pneumatic and hydraulic pistons, reduces the risk of internal leakage and prevents metal contact between the cylinder and the piston, with stable installation in the groove and correct operation with suitable lubrication.

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