PVDF End Cap

A PVDF end cap is a terminal fitting that is used to seal or close the end of a pipe, tube, rod, filter cartridge, or structural component. The Petron Thermoplas is a PVDF End Cap Supplier company based in India. It is made from a combination of plastic and vinyl. PVDF End Caps are long-lasting, do not wear out quickly, and can be used for a long time. PVDF End Cap material is resistant to wear and tear. PVDF End Cap is widely used in piping, underground wiring, and conduit lines. You will need to take the top of the cap off to keep it from leaking. The cap is usually available for pipes with a diameter of two inches or more.

PVDF End Cap, the end of the pipe to leave an extension and keep your chemical system leak-free. PVDF end caps serve as protective enclosures for tubing and pipes across diverse industries. These PVDF end caps adhere to all standard dimensions, ensuring compatibility with a wide array of applications. These PVDF end caps are meticulously shaped to match the contours of the pipelines they are intended to protect. Their function goes far beyond aesthetics; they help prevent the ingress of dirt, moisture, or debris, reduce wear and tear, and enhance safety by eliminating sharp edges.

PVDF End Cap Details

d (Diameter)
PN (Pressure Nominal)
A (Length from end to centerline)
C (Length from bottom to centerline)
Z1 (Insertion depth or socket length)

d	PN	A	B	Z
20	16	28	36	7
25	16	33	40	8
32	16	42	44	8
40	16	51	49	8
50	16	63	55	8
63	16	77	64	9
75	16	90	72	10
90	16	108	79	8
110	16	131	94	1

Property	Typical Value	Unit	Notes
Material Type	Polyvinylidene Fluoride (PVDF)	—	High-performance fluoropolymer
Density	1.75 – 1.78	g/cm³	Higher than most thermoplastics
Tensile Strength	35 – 55	MPa	Good mechanical strength
Elongation at Break	20 – 50	%	Moderate flexibility
Flexural Modulus	1,200 – 1,800	MPa	Good rigidity
Operating Temperature Range	-40 to +150	°C	Continuous service temperature
Melting Point	165 – 177	°C	Depends on grade
Thermal Conductivity	0.17 – 0.20	W/m·K	Low heat transfer
Water Absorption (24 hrs)	< 0.04	%	Very low moisture absorption
Chemical Resistance	Excellent	—	Resistant to acids, bases, and solvents
UV Resistance	Excellent	—	Suitable for outdoor use
Flammability Rating	UL 94 V-0 (grade dependent)	—	Flame-retardant grades available

1) High Mechanical Strength

Good tensile and impact strength
Withstands internal pressure when matched with proper SDR

2) Corrosion & Rust Proof

Non-metallic material
Does not corrode, scale, or degrade like steel

3) UV & Weather Resistant

Suitable for outdoor installations
Excellent resistance to sunlight and aging

4) Low Water Absorption

Minimal moisture uptake
Maintains dimensional stability

5) High Purity Material

Available in high-purity grades
Suitable for the pharmaceutical and semiconductor industries

6) Smooth Internal Surface

Reduces pressure drop
Minimizes scaling and deposits

7) Flame Resistance

Good fire performance (UL 94 V-0 grade available)

8) Easy Installation

Available in socket weld, butt weld, threaded, and flanged types
Lightweight and easy to handle

Pressure Rating by SDR (at 20°C)

SDR	Pressure Rating (PN)	Pressure Rating (PSI/Bar)	Typical Application
SDR 33	PN6	6 bar (90 psi)	Low-pressure chemical lines
SDR 21	PN10	10 bar (150 psi)	General industrial piping
SDR 17	PN16	16 bar (232 psi)	Medium-pressure systems
SDR 13.6	PN20	20 bar (290 psi)	Higher-pressure applications
SDR 11	PN25	25 bar (362 psi)	High-pressure chemical systems

Pressure Derating with Temperature (Typical for PVDF)

Temperature (°C)	Pressure Factor	Example: PN16 becomes	Notes
20°C	1.00	16.0 bar	Full rated pressure (Ambient)
40°C	0.87	13.9 bar	Initial strength reduction
60°C	0.70	11.2 bar	Significant de-rating begins
80°C	0.50	8.0 bar	50% of nominal pressure capacity
100°C	0.30	4.8 bar	Limited to low-pressure applications
120°C	0.15	2.4 bar	Near upper limit for pressurized use

Pressure Rating by Nominal Size (SDR 17 – PN16 at 20°C)

Nominal Size (DN)	Outside Diameter (mm)	Pressure Rating (bar)	SDR Equivalent
DN15	20 mm	16 bar	SDR 21 / 17
DN25	32 mm	16 bar	SDR 21 / 17
DN50	63 mm	16 bar	SDR 21 / 17
DN100	110 mm	16 bar	SDR 21 / 17
DN200	225 mm	16 bar	SDR 21 / 17

If you are searching for customized product designs that meet your requirements, don’t worry. Petron Thermoplast also offers custom product manufacturing services to meet the unique needs of various industries. Work with our expert engineers to create custom designs suited for your application.

Benefits of Using PVDF End Cap

Excellent Chemical Resistance

Resistant to strong acids, bases, solvents, and oxidizing agents
Ideal for chemical processing and corrosive environments

High Temperature Resistance

Continuous operating temperature up to 150°C
Maintains mechanical strength at elevated temperatures

Superior Corrosion Protection

Does not rust or corrode like metal end caps
Long service life in aggressive environments

High Mechanical Strength

Good tensile and impact strength
Withstands internal pressure when matched with a proper SDR rating

UV & Weather Resistance

Suitable for outdoor installations
Resistant to sunlight degradation

Low Water Absorption

Minimal moisture uptake
Maintains dimensional stability

High Purity Material

Available in high-purity grades
Suitable for pharmaceutical, food, and semiconductor industries

Fire Resistance

Good flame resistance (UL 94 V-0 grade available)

Easy Installation

Compatible with socket weld, butt weld, and threaded connections
Lightweight compared to metal alternatives

Long Service Life & Low Maintenance

Reduced replacement frequency
Lower overall lifecycle cost

Types of PVDF End Cap

Socket Weld PVDF End Cap

Description:
Designed to fit over the outside of a pipe and joined using socket fusion welding.

Applications:

Chemical processing lines
Oil, gas treatment systems

Advantages:

Strong leak-proof joint
Easy installation
Suitable for small to medium pipe sizes

2️. Butt Weld PVDF End Cap

Description:
Welded directly to the pipe end using butt fusion welding.

Applications:

High-pressure systems
Larger diameter pipelines

Advantages:

High-strength joint
Suitable for higher pressure ratings
Uniform internal bore

3. Threaded PVDF End Cap

Description:
Features internal threads to screw onto male threaded pipe ends.
Applications:
- Maintenance points
- Temporary closures
Advantages:
- Easy removal and replacement
- No welding required