PTFE Mechanical Seal

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PTFE Mechanical Seal Specification

Hardness
60~65 Shore D

Application
Chemical Processing, Pumps, Mixers, Agitators

Theory
Mechanical Seal

Style
Mechanical Seal

Material
PTFE

Temperature
40-250 Celsius (oC)

Product Type
PTFE Mechanical Seal

Pressure
Up to 10 bar

Speed
Up to 20 m/s

Color
Sliver

Function
Shaft Sealing

Size
Customizable (Standard: 12 mm to 100 mm Shaft)

Structure
Single/Double Mechanical Seal

Resistance
Excellent Chemical Corrosion Resistance

Conformity
Meets International Standards (DIN, ISO)

Seal Face Combination
PTFE vs. Carbon, Ceramic, or Silicon Carbide

Leakage Protection
High Precision, Low Leakage

Lifespan
Long Service Life

Installation
Easy to Install, Cartridge Type Optional

Color
White (Standard)

Elasticity
High Elastic Recovery

Rotation Direction
Unidirectional & Bidirectional Capability

About PTFE Mechanical Seal

Operations Conditions:

Temperature:-40 C to +250 C
Pressure:=1.2MPa
Speed:=15m/s

Materials:

Stationary Ring:Silicon Carbide Reaction Bonded,Ceramic(Alumina),Silicon Carbide
Sintered Pressureless
Rotary Ring:Antimony Impreg. Carbon Graphite,Resin Impregnated Carbon Graphite
(Furan), Silicon Carbide Reaction Bonded,Silicon Carbide Sintered Pressureless
Secondary Seal:Pure PTFE
Spring and Metal Parts:Stainless Steel,Stainless Steel,Hastelloy C-4 Alloy

Applications: Strong corrosive fluids

SIZE/INCH	d	D3	D2	D1	L1	L2
0.500	12.7	26.70	13.4	25.40	20.62	7.9
0.625	15.8	30.66	16.6	31.75	19.05	10.3
0.750	19.0	33.83	19.7	34.93	22.23	10.3
0.875	22.2	37.00	22.9	38.10	23.80	10.3
1.000	25.4	40.10	26.1	41.28	25.40	11.1
1.125	28.5	43.36	29.3	44.45	26.97	11.1
1.250	31.7	48.13	32.4	47.63	26.97	11.1
1.375	34.9	51.30	35.6	50.80	28.58	11.1
1.500	38.1	54.48	38.8	53.98	28.58	11.1
1.625	41.2	60.83	42.4	60.33	34.93	12.7
1.750	44.4	64.00	45.5	63.50	34.93	12.7
1.875	47.6	66.68	48.7	66.68	34.93	12.7
2.000	50.8	70.36	51.9	69.85	34.93	12.7
2.125	53.9	76.70	55.0	76.20	42.85	14.3
2.250	57.1	79.88	58.2	79.38	42.85	14.3
2.375	60.3	83.06	61.4	82.55	42.85	14.3
2.500	63.5	86.23	64.6	85.73	42.85	14.3
2.625	66.6	89.40	67.7	85.73	42.85	15.9
2.750	69.8	92.58	70.9	88.90	42.85	15.9
2.875	73.0	95.76	74.1	95.25	42.85	15.9
3.000	76.2	97.33	77.3	98.43	42.85	15.9
3.125	79.3	100.50	80.5	101.60	42.85	19.8
3.250	82.5	105.28	83.6	104.78	42.85	19.8
3.375	85.7	108.46	86.8	107.95	42.85	19.8
3.500	88.9	111.63	90.0	111.13	42.85	19.8
3.625	92.0	114.80	93.1	114.30	42.85	19.8
3.750	95.2	117.98	96.3	117.48	42.85	19.8
3.875	98.4	121.16	99.5	120.65	42.85	19.8
4.000	101.6	124.33	102.7	123.83	42.85	19.8

Product details

Speed	15m/s
Brand	Makseals
Model Name/Number	MAK19
Temperature	-40 Degree C to +250 Degree C
Pressure	1.2MPa

High Performance in Challenging Environments

Built with PTFE and compatible with carbon, ceramic, or silicon carbide, this mechanical seal withstands aggressive chemicals and extreme temperatures. Its high elasticity prevents deformation and ensures secure sealing, making it an outstanding choice for applications in chemical processing where durability and reliability are crucial.

Versatile, Easy Installation and Maintenance

The PTFE Mechanical Seal supports both single and double structures, with option for cartridge-style installation. This not only simplifies the fitting process but also allows for quick maintenance or replacement. The wide compatibility with rotating equipment like pumps, mixers, and agitators ensures broad utility across industries.

Customizable and Internationally Certified

With shaft sizes ranging from 12 mm to 100 mm standard-or custom sizes available-this seal adapts to your specific equipment needs. Compliance with DIN and ISO standards assures dependable quality, long service life, and suitability for global markets, including manufacturing, exporting, and supplying in India.

FAQ's of PTFE Mechanical Seal:

Q: How does the PTFE Mechanical Seal provide excellent chemical corrosion resistance?

A: The PTFE material used in the mechanical seal exhibits superior resistance to a wide range of chemicals, including acids and caustics. Combined with corrosion-resistant seal face materials such as carbon, ceramic, or silicon carbide, the seal maintains its integrity even in highly aggressive chemical environments.

Q: What are the benefits of choosing different seal face combinations like PTFE vs. carbon, ceramic, or silicon carbide?

A: Each material combination offers specific advantages: PTFE with carbon provides low friction and smooth operation, ceramic delivers excellent hardness and abrasion resistance, while silicon carbide offers high thermal conductivity and mechanical strength for more demanding scenarios.

Q: When should the PTFE Mechanical Seal be replaced or maintained?

A: Routine inspections are recommended based on operational hours and process conditions. Long service life is expected due to the high precision, robust structure, and resilience of materials, but maintenance intervals may vary depending on usage intensity and the nature of the fluids being sealed.

Q: Where is this mechanical seal best applied?

A: This mechanical seal is ideal for use in chemical processing plants, industrial pumps, agitators, and mixers-environments where exposure to corrosive fluids and challenging operating conditions are prevalent. Its customizable size and compliance with international standards enable broad industry use.

Q: How does the seal ensure high precision and low leakage?

A: The seal employs meticulously engineered components and tight manufacturing tolerances. Its high elastic recovery and sturdy design support minimal leakage, providing efficient, reliable shaft sealing even under variable pressure and high-speed operating conditions.

Q: What is the installation process, and can non-specialists fit the seal?

A: Installation is straightforward, especially with the cartridge type. Clear instructions and user-friendly design features facilitate easy fitting, reducing downtime and making it possible for maintenance staff without specialized training to install or replace the seal efficiently.

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