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Static Seals

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Static Seals for Hydraulic and Pneumatic Applications

Static seals are critical components used to prevent leakage between two non-moving surfaces in hydraulic and pneumatic systems. Unlike dynamic and static seals that manage motion-related sealing, static seals provide a reliable barrier in fixed assemblies, ensuring consistent pressure retention, leak prevention, and contamination control.

O-Rings

remain the most widely used static seals, offering a simple yet highly effective solution for sealing non-moving interfaces.

Gaskets

provide flat sealing between two mating surfaces, ideal for flanged connections.

Bonded Seals

combine a metal washer with an elastomeric element for added strength and sealing precision in high-pressure environments.

Static Face Seals

are applied where sealing occurs perpendicular to the mating surfaces.

Materials

Nitrile Rubber (NBR)

Good resistance to oils and fuels, cost-effective.

Viton (FKM)

High-temperature resistance and excellent chemical compatibility.

Silicone

Good temperature resistance and flexibility.

EPDM

Excellent for water and weather resistance.

Applications

Hydraulic and Pneumatic Cylinders

Sealing between the cylinder head and body, or between ports and the cylinder.

Valves

Sealing between valve body components.

Pumps

Sealing between pump housing and stationary parts.

Key Features and Benefits

Leakage Prevention

Effectively prevent fluid or gas leakage between stationary parts.

Pressure Maintenance

Help maintain system pressure by preventing loss of hydraulic fluid or pneumatic air.

Contamination Control

Prevent external contaminants from entering the system.

Simplified Design

Often simpler in design compared to dynamic seals.

Selecting the Right Seal

Operating Pressure

The maximum pressure the seal needs to withstand.

Fluid Compatibility

The type of fluid or gas the seal will be in contact with.

Temperature Range

The range of temperatures the seal will be exposed to.

Surface Finish

The surface finish of the mating components.

Download Size chart

OR

DR

ORH

ORT

ORU

ORV

QR

S3

TR

ORB

ORC

ORD

ORE

S08P

S08R

S09P

S09R

S10P

S10R

S01

S02

S04

ORTS

S05

S06

S13

S13R

S14

S15

S16

SPH

S17

S18P

S18R

S19

VAM01

WP

WR

HP

ORK

S20

S21

S22

S23

S26

S27

PTFE

S11

S12

S24

S25

DIN11851

DIN11851A

DIN11851B

DIN11851C

SMS1149

SMS1149R

SMS1149L

SMS1149C

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  • No 66 & 77, Perungudi Industrial Estate, Chennai-600096, India
  • +91 63792 05041
  • inquiry@ismat.in

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