Fernco 4" Multitight Gasket
The Fernco 4" MultiTight Gasket (PN SV-4) is a heavy-duty, flexible rubber gasket designed to provide a watertight and gas-tight seal around 4" pipes passing through concrete tanks, risers, sumps, or wall sleeves. Engineered to accommodate pipe movement, pressure changes, and vibration, it ensures a secure, leak-resistant connection without the need for glue or sealant.
MultiTight gaskets are widely used in rainwater harvesting, septic, stormwater, and utility infrastructure applications where long-term durability and tight sealing are critical. The flexible design allows for quick, tool-free installation and helps maintain seal integrity even with minor pipe misalignment.
Product Details
Key Features
Watertight Seal for 4" Pipe Penetrations
Fits SDR35, Schedule 40, and Similar 4” Pipes
Flexible EPDM Rubber Construction – UV, ozone, and chemical resistant
Tool-Free Installation – No adhesives or fasteners needed
Ideal for Tanks, Vaults, Risers, and Concrete Structures
Accommodates Pipe Movement and Expansion
NSF-Compliant Rubber (may vary by manufacturer)
Specifications
Part Number: SV-4
Pipe Size Compatibility: 4" nominal diameter
Pipe Types: SDR35, Schedule 40, and equivalent
Material: EPDM or Nitrile Rubber (depending on application)
Seal Type: Compression-fit / press-in
Color: Black
Installation Hole Size: Typically ~4.5"–4.75" (verify with manufacturer guidelines)
Use Cases: Rainwater tanks, septic tanks, pump chambers, underground vaults, wall sleeves