Flexiseal 110 mm EPDM Bulkhead Seal – Flexible Tank Fitting for 110 mm Pipe (1 Pack)

Flexiseal U400-35 is a premium EPDM flexible bulkhead seal engineered for clean, reliable pipe installations through tanks, barrels, ponds, and hydroponic systems. Designed for 110 mm pipe and a 127 mm hole size, it delivers a strong, watertight seal using the same installation style used by flexible rubber bulkhead fittings across aquaculture, hydroponics, and industrial fluid systems.

Made from high‑grade EPDM, Flexiseal grips firmly around the pipe, absorbing movement and vibration while maintaining a leak‑resistant seal - all without adhesives, threaded fittings, or complex hardware. It's simple push‑fit design makes installation fast and friendly for DIY users, while offering the durability and chemical resistance demanded by commercial operators.

Whether you’re setting up rainwater harvesting, filtration systems, nutrient tanks, or industrial processing equipment, Flexiseal provides a dependable, cost‑effective alternative to traditional rigid bulkhead fittings and Uniseal‑type rubber seals. With a smooth finish, robust wall compression, and long service life, Flexiseal delivers a premium sealing solution that’s easy to install, built to last, and trusted across a wide range of applications.

Why Flexiseal Uses EPDM Rubber (Not Alcryn)
Flexiseal is made from premium EPDM rubber because it delivers the best long‑term performance for outdoor water systems, tanks, ponds, hydroponics, and aquaculture. EPDM offers exceptional UV and ozone resistance, meaning it won’t crack, harden, or degrade in sunlight — even after years of exposure. It also maintains a strong, flexible compression seal around the pipe, absorbing movement and vibration without leaking.

While Alcryn is a high‑quality elastomer used in soft grommets and indoor moulded parts, it does not match EPDM’s durability in continuous outdoor use or long‑term water immersion. EPDM is the industry standard for flexible bulkhead seals because it provides a reliable, watertight connection that lasts.

By choosing EPDM, Flexiseal delivers a premium, long‑life sealing solution trusted across hydroponics, aquaculture, rainwater harvesting, and industrial fluid systems.

Features
• Premium EPDM rubber 
• Flexible, self‑sealing design
• Fits 110 mm pipe
• Requires 127 mm hole
• Chemical‑resistant
• UV‑resistant
• Vibration‑absorbing
• No adhesives or fittings required
• Ideal for tanks, ponds, hydroponics, aquaculture, and industrial systems

Specifications
• Material: EPDM
• Colour: Black
• Pipe OD: 110 mm
• Hole size: 127 mm
• Seal type: Flexible compression bulkhead
• Operating temperature: EPDM‑standard range
• Condition: New

Shipping & Delivery
Fast dispatch from Auckland. Nationwide courier options available.