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Overmolded O-Ring (also known as overmolded washer or overmolded O-Ring) is a kind of sealing element made of metal or plastic core covered with elastic material (such as rubber, Viton, silicone, etc.)
. Its unique structure combines the mechanical strength of metal and the sealing performance of elastic materials, the main uses include the following:
1. High pressure or high vacuum environment sealing
Application Scenarios: Hydraulic systems, aerospace equipment, semiconductor manufacturing equipment, and so on.
Role: metal core to provide support to prevent the elastomer extrusion deformation under high pressure to ensure sealing reliability; in a vacuum environment to prevent gas permeation.
2. Extreme temperature conditions
Application Scenario:Automobile engines, high temperature pipelines, refrigeration equipment, etc.
Role: metal core can withstand high or low temperature dimensional changes, the outer covering materials (such as silicone, Viton) to provide elastic sealing to avoid pure rubber O-ring temperature
degrees due to hardening or embrittlement.
3. Chemical corrosive media
Application Scenario: Chemical equipment, petroleum pipeline, acid and alkali liquid transportation system.
Role: the outer cladding layer is made of chemical corrosion resistant materials (such as PTFE, FFKM), the inner core resists mechanical stress and extends the life of the seals.
4. Dynamic sealing and wear-resistant requirements
Application Scenario: rotating shafts, reciprocating parts (such as hydraulic cylinders).
Role: metal core to reduce frictional resistance, the outer cladding layer to provide elastic contact, reduce wear and tear, suitable for frequent movement sealing scenarios.
5. Prevent elastomer extrusion (Extrusion)
Application Scenario: High pressure difference valve, pump body seal.
Role: metal core to block the elastomer under pressure is squeezed into the gap to avoid seal failure.
6. Electrical or EMI shielding
Application Scenario: electronic equipment, communication equipment.
Role: If the inner core for the conductive metal (such as copper), covered with insulating materials, can be both sealing and electromagnetic shielding function.
. Its unique structure combines the mechanical strength of metal and the sealing performance of elastic materials, the main uses include the following:
1. High pressure or high vacuum environment sealing
Application Scenarios: Hydraulic systems, aerospace equipment, semiconductor manufacturing equipment, and so on.
Role: metal core to provide support to prevent the elastomer extrusion deformation under high pressure to ensure sealing reliability; in a vacuum environment to prevent gas permeation.
2. Extreme temperature conditions
Application Scenario:Automobile engines, high temperature pipelines, refrigeration equipment, etc.
Role: metal core can withstand high or low temperature dimensional changes, the outer covering materials (such as silicone, Viton) to provide elastic sealing to avoid pure rubber O-ring temperature
degrees due to hardening or embrittlement.
3. Chemical corrosive media
Application Scenario: Chemical equipment, petroleum pipeline, acid and alkali liquid transportation system.
Role: the outer cladding layer is made of chemical corrosion resistant materials (such as PTFE, FFKM), the inner core resists mechanical stress and extends the life of the seals.
4. Dynamic sealing and wear-resistant requirements
Application Scenario: rotating shafts, reciprocating parts (such as hydraulic cylinders).
Role: metal core to reduce frictional resistance, the outer cladding layer to provide elastic contact, reduce wear and tear, suitable for frequent movement sealing scenarios.
5. Prevent elastomer extrusion (Extrusion)
Application Scenario: High pressure difference valve, pump body seal.
Role: metal core to block the elastomer under pressure is squeezed into the gap to avoid seal failure.
6. Electrical or EMI shielding
Application Scenario: electronic equipment, communication equipment.
Role: If the inner core for the conductive metal (such as copper), covered with insulating materials, can be both sealing and electromagnetic shielding function.
