SKU FCC077
4" ANSI Flange Cover Cap - 273.1mm ID, Polyethylene
Not sure it's the right size? Ask a person.
Product details
Polyethylene flange cover cap designed to protect ANSI 4" pipe flanges from dirt, moisture and impact damage.
This cap fits snugly over the raised face of a 4" ANSI flange to form a complete seal against the bore and gasket sealing surface. It prevents contamination and corrosion during storage and transit, and shields the flange face from accidental damage on-site. Ideal for maintenance teams, plant operators and pipe stockholders who need reliable temporary protection before final assembly or installation.
Key Features
- Fits 4" ANSI Series 600 flanges
- Internal diameter 273.1mm, internal length 38.1mm
- Durable polyethylene construction
- Chemical resistant and long-lasting
- Easy to fit and remove
Specifications
- Standard: ANSI
- Nominal size: 4"
- Internal diameter: 273.1mm
- Internal length: 38.1mm
- Material: Polyethylene (PE)
- Pressure Series: 600
Applications
- Oil and gas pipeline protection during construction and transit
- Water treatment and utility flange sealing
- Plant maintenance and flange storage
- Chemical and industrial pipework protection
- Offshore and onshore site operations
Sizing questions
How do I pick the right cap?
Measure the outside diameter (OD) of the flange. The cap inside diameter (ID) should match it.
Why are there two caps for one size?
Flange outside diameters vary with the pressure class, so some sizes come with more than one cap ID. Measure the OD and pick the ID that matches.
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.