ASTM SCH40 & SCH80 PVC-U/C Rubber Gasket

Key Features

• ASTM compatible: designed specifically for ASTM SCH40/SCH80 flanges with precise dimensions.
• EPDM material: excellent acid/alkali, ozone, and aging resistance.
• Elastic seal: fills flange face irregularities under compression for reliable sealing.
• Industrial-grade durability: suitable for chemical and water treatment corrosive environments.

Manufacturing Process

Manufactured by compression molding or die-cutting. EPDM compound is vulcanized and formed with precise control of cross-sectional shape and dimensions conforming to ASTM tolerances.

Critical Process Parameters

• ID, OD, bolt hole positioning accuracy.
• Uniform thickness.
• Control of rubber hardness, tensile strength, and compression set.

Raw Material Characteristics

• Material Composition: Ethylene Propylene Diene Monomer (EPDM), conforming to ASTM D2000.
• Material Properties: Resistant to acids, alkalis, ozone, and aging.
• Wide operating temperature range, -30°C to +120°C.
• Good elasticity and compression recovery.

Typical Applications

• Sealing for ASTM chemical piping flange connections.
• Flange interfaces in industrial water treatment equipment.
• Flange sealing in corrosive fluid transport systems.

Application Scenarios

• Sealing for ASTM industrial piping flange connections.