SKU FLC025-B
4" Class 150 Flange Stud Hole Insert - Blue LDPE
£12.00incl. VAT
Not sure it's the right size? Ask a person.
Product details
Blue LDPE stud hole insert designed to protect 4" 150 Class flange bolt holes and sealing surfaces.
This flange protector features four ribs that push into the stud holes around a flange face, offering quick and cost-effective protection during production, transportation, storage and maintenance. The insert shields the gasket sealing surface from moisture, dirt, paint and most oils, making it ideal for oil and gas refining, hydraulics and process plant applications where flange integrity must be preserved.
Key Features
- Four ribs anchor into bolt holes for secure fit
- LDPE material resists moisture, dirt, paint and oils
- Quick and simple installation without tools
- Protects gasket face and sealing surfaces
- Cost-effective alternative to full-face flange protectors
Specifications
- Material: LDPE
- Colour: Blue
- Nominal Size: 4"
- Pressure Class: 150
Applications
- Oil and gas refining and storage facilities
- Hydraulic system flanges
- Flange protection during production and assembly
- Transit and warehouse storage
- Maintenance shutdowns and equipment storage
Sizing questions
Which class do I need?
Use the pressure class stamped on the flange rim. Inserts are sized to the bolt holes of that class, so an insert for a different class may not fit.
How many do I need?
One insert per bolt hole. The bolt-hole count depends on the flange size and class — count the holes on your flange.
ANSI or DIN — which is my flange?
ANSI / ASME flanges are sized in inches (for example 4") with a pressure class such as 150 or 300. DIN / EN flanges are sized in DN (for example DN 100) with a PN rating. The standard and size are normally stamped on the flange rim.