Rubber pipe expansion joint FSF

steelroundflange

Product overview
Absorbs thermal expansion, contraction and vibration in piping systems. Constructed with nylon-reinforced EPDM, these expansion joints provide flexibility and durability for industrial fluid handling. The unit features galvanized carbon steel flanges with a hardened steel flange ring for a secure connection. It reduces noise and protects sensitive equipment from mechanical stress. Design permits significant axial movement, lateral movement and a maximum deflection of 35°. Maximum working temperature indicated as 104°C; pressure ratings up to 230 psi are referenced in product data.

Features & Benefits

• Overall length: 130 mm (all sizes)
• Suitable for water (including warm water, wastewater and seawater), weak acids, alkalis and compressed air (oil free)
• High-vacuum applications require a vacuum spiral
• EPDM rubber sealing surface – no gasket required
• Not compatible with oil, gasoline or grease
• Temperature range: -25°C to +100°C (maximum working temperature noted as 104°C)
• Part of the Grinnell product family
• Broad size range DN50–DN300 (2 in–12 in)

Sizes and availability
Sizes: DN50 to DN300 (2 in to 12 in)
Regional availability: Not available in the US or Canada
Pressure rating: up to 230 psi referenced in product text; technical table lists Pressure Rating as N/A

Technical specifications

• Model / Series: FSF
• Denomination: Flanged rubber bellows (flexible expansion joint)
• Body / bellows material: Nylon‑reinforced EPDM
• Sealing surface: EPDM rubber (no gasket required)
• Flanges: Galvanized carbon steel with a hardened steel flange ring
• Overall length: 130 mm (all sizes)
• Sizes available: DN50 to DN300 (2 in to 12 in)
• Temperature range: -25°C to +100°C; maximum working temperature noted as 104°C
• Pressure rating: up to 230 psi mentioned in product text; technical table lists Pressure Rating as N/A
• Movement capabilities: significant axial movement, lateral movement, maximum deflection 35°
• Compatible fluids: water (including warm water, wastewater, seawater), weak acids, alkalis, compressed air (oil free)
• Not compatible with: oil, gasoline, grease
• High vacuum: requires a vacuum spiral
• Regional limitation: not available in the US or Canada