SKU FLC026
4" Class 300 Flange Stud Hole Insert - Black LDPE
£12.00incl. VAT
Not sure it's the right size? Ask a person.
Product details
Stud hole insert cap for 4" 300 Class flanges, manufactured in high-density polyethylene to protect flange faces and bolt holes.
This flange protector features four ribs that push into the stud holes around a flange face, offering an alternative to full-bore protectors. The design shields the critical gasket sealing surface from moisture, dirt, paint, oils and physical damage during production, transportation, storage and maintenance work. It is quick to fit and cost-effective for protecting expensive flange assemblies.
Key Features
- Four stud hole ribs grip securely into flange bolt holes
- High-density polyethylene (LDPE) construction
- Resists moisture, dirt, paint and most oils
- Easy and quick to install without tools
- Durable and reusable protection
- Cost-effective alternative to replacement or repair
Specifications
- Nominal flange size: 4"
- Pressure rating: 300 Class
- Material: Black LDPE
Applications
- Oil and gas refining operations
- Hydraulic systems and equipment
- Flange protection during production and assembly
- Storage and inventory protection
- Transit and logistics
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.