AC3858 Fernco Adaptor Coupling 360mm - 385mm / 240mm - 265mm

Fernco AC3858 adaptor coupling with a banded seal, designed for pipe with an outside diameter of 360mm to 385mm and 240mm to 265mm. Manufactured from EPDM rubber, incorporating a Grade 1 304 stainless steel band.

The Fernco AC3858 Adaptor Coupling is a heavy-duty flexible solution designed to connect extra-large drainage pipes of different outside diameters while maintaining a secure, long-lasting seal. Built for demanding environments, this adaptor coupling is ideal for large-scale repairs, refurbishments and new installations within commercial, industrial and infrastructure drainage systems.

EPDM Adaptor Coupling Data Sheet

Manufactured from premium EPDM rubber and reinforced with corrosion-resistant stainless steel clamp bands, the AC3858 provides a dependable airtight and watertight connection capable of withstanding environmental stress, ground movement and prolonged use. Its flexible sleeve compensates for slight pipe misalignment and enables smooth transitions between mixed pipe materials such as PVC, clay, concrete and cast iron. Installation is fast and straightforward using standard hand tools, helping reduce labour time while delivering professional-grade results.

Key Features & Benefits:

• Designed for extra-large mixed-diameter pipe transitions
• Flexible EPDM rubber body for reliable sealing
• Corrosion-resistant stainless steel clamps
• Provides an airtight and watertight connection
• Accommodates slight pipe misalignment and movement
• Easy, tool-friendly installation
• Compatible with multiple drainage pipe materials
• Ideal for large commercial and industrial drainage projects

The AC3858 is a dependable choice for contractors who require strength, flexibility and sealing confidence in large-diameter drainage systems.