GRUVLOK Metal Pipe Flange: Flange, 8 in, Ductile Iron, NBR Seal, 300 psi
The GRUVLOK Metal Pipe Flange is an 8-inch grooved pipe flange made of ductile iron with an NBR seal, rated for a maximum operating pressure of 300 psi. It has an overall length of 16 1/2 inches (MPN 0390201721). 3G…
SKU 3G-OTH-483403
Need installation or engineering help?
Ask a question
Product Description
The GRUVLOK Metal Pipe Flange is an 8-inch grooved pipe flange made of ductile iron with an NBR seal, rated for a maximum operating pressure of 300 psi. It has an overall length of 16 1/2 inches (MPN 0390201721). 3G Electric interprets customer demand and delivers this genuine industrial component across 14 departments, with specialist depth in combustion, pumps and controls as an authorised distributor.
Frequently Asked Questions
What is a GRUVLOK metal pipe flange used for?
A GRUVLOK metal pipe flange connects grooved-end pipes in industrial fire-protection, HVAC, and process-piping systems. Its ductile-iron body and NBR seal handle pressures up to 300 psi, making it suitable for water, oil, and chemical lines where quick mechanical joining is needed.
What are the specifications of the GRUVLOK 8-inch pipe flange?
This GRUVLOK flange is 8 in, ductile iron with an NBR seal, rated for 300 psi maximum operating pressure. Overall length is 16 1/2 in. The manufacturer part number is 0390201721. It uses a grooved connection for fast, reliable assembly without welding.
Where to buy GRUVLOK pipe flanges worldwide?
3G Electric supplies GRUVLOK pipe flanges worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial solutions provider, we source genuine GRUVLOK components like this 8 in ductile-iron flange with NBR seal, ensuring you get the right part for your application.
How to install a GRUVLOK grooved pipe flange?
Installation requires aligning the flange with the grooved pipe end, inserting the NBR gasket, and tightening bolts evenly to the manufacturer's torque spec. No welding is needed. Always verify pipe-end preparation and lubricate the gasket per GRUVLOK guidelines to ensure a leak-free joint at up to 300 psi.
Used in
Common applications for GRUVLOKGRUVLOK Products
3G Electric supplies GRUVLOK grooved pipe flanges. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









