SKU FLC028
4" Class 900 Flange Stud Hole Insert - Black LDPE
£12.00incl. VAT
Not sure it's the right size? Ask a person.
Product details
Plastic stud hole insert designed to protect flange faces by plugging the four bolt holes of a 4-inch ANSI 900 Class flange.
This insert features four ribs that engage the stud holes around the flange perimeter, shielding the sealing surface from moisture, dirt, paint and oils during production, transportation, storage and maintenance. Manufactured from high-density polyethylene (LDPE), it offers a quick-fit, cost-effective solution for protecting expensive flange equipment in demanding industrial environments.
Key Features
- Four retention ribs push into stud holes for secure fit
- High-density polyethylene (LDPE) construction
- Resists moisture, dirt, paint and most oils
- Quick and easy to install and remove
- Protects gasket face from contamination and damage
Specifications
- Nominal flange size: 4 inch
- Standard: ANSI 900 Class
- Material: LDPE plastic
- Colour: Black
Applications
- Oil and gas refining operations
- Hydraulic systems and equipment
- Flange protection during manufacture and assembly
- Transit and warehouse storage
- Maintenance and turnaround shutdowns
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.