4″ ANSI EPDM Flange Gasket Fitting

Banjo’s 4″ ANSI Flange Gasket, available at BARR Plastics. These gaskets are made from high-quality EPDM, ensuring a secure, leak-proof seal for your tanks. Designed to withstand up to 150 PSI, they are perfect for a variety of applications, including industrial and agricultural use.

4″ ANSI EPDM Flange Gasket AF400G

The Barr Plastics 4″ ANSI EPDM Flange Gasket (model AF400G) is a durable, flexible sealing solution for standard 4-inch ANSI flanged piping. Made from EPDM rubber, this gasket delivers reliable water and chemical resistance, long service life, and easy installation for industrial, municipal, and HVAC systems.

Features & Specifications

• Type: Flange gasket designed for ANSI-standard flanges
• Model: AF400G (4″ size)
• Material: EPDM (Ethylene Propylene Diene Monomer) rubber
• Size: Fits standard 4-inch ANSI flanged connections
• Shape: Circular to match flange faces and bolt patterns
• Performance: Excellent resistance to heat, ozone, aging, water, and steam
• Design: Compressible material for tight sealing with allowance for slight pipe movement
• Compliance: Manufactured to ANSI dimensional standards for compatibility

Benefits & Applications

The AF400G EPDM flange gasket provides a cost-effective, low-maintenance seal that minimizes leakage and downtime. Its EPDM construction resists weathering, ozone, and thermal cycling, making it ideal for long-term service in water and wastewater treatment, chemical processing (where EPDM-compatible fluids are used), HVAC systems, and general industrial piping.

Use cases include sealing pump connections, pipe spools, valves, and equipment flanges in municipal water plants, industrial process lines, and building mechanical systems. The gaskets compressibility ensures a uniform seal under varying bolt loads and slight flange misalignment, improving system reliability and reducing maintenance costs.

Installation Guidelines

• Ensure flange faces are clean and free of debris, corrosion, or old gasket material.
• Center the AF400G gasket between flange faces, aligning bolt holes as needed.
• Tighten bolts evenly in a crisscross pattern to the recommended flange torque.
• Inspect the seal after initial pressurization and retorque if required.

Why Buy from Barr Plastics

At Barr Plastics, we supply quality components backed by technical support and fast fulfillment. Our gaskets are stocked for quick shipment and selected to meet common industrial standards. Barr Plastics can ship across Canada and the US through our distributor channels and partnered facilities, ensuring you get the AF400G when and where you need it.

Need help confirming compatibility or ordering in bulk? Contact us or request a quote today. Order now to secure reliable sealing for your flanged connections.