Sealing Excellence, Securing Industry

CFKS High Temperature Stainless Steel PTFE Oil Seal 120*150*12 High Pressure Compressor Shaft Seal

Engineered to excel where conventional elastomeric radial shaft seals fail, the 12015012 High Temperature Stainless Steel PTFE Oil Seal provides superior dynamic sealing for heavy-duty industrial compressors. Featuring a precision-machined 304/316 stainless steel housing and filled PTFE sealing lip, this seal operates seamlessly under elevated thermal stress and aggressive media while drastically reducing shaft friction and power loss.

  • Superior Thermal & Chemical Resistance: Operates reliably across extreme temperature variations without hardening or degrading.

  • Low-Friction & Dry-Running Capability: High-grade filled PTFE lip reduces heat generation, shaft wear, and sticky friction during dry startup.

  • Extreme Pressure Stability: Hydrodynamic sealing lip geometry withstands high dynamic pressure in heavy-duty compressors.

Find your sealing solution with CFKS — contact us for a quote.

Product Name High Temp PTFE Oil Seal  Specification 120mm * 150mm * 12mm 
Material SS304/SS316 Stainless Steel + Filled PTFE Feature High Pressure & Wear Resistance, Low Friction
Work Temperature -20℃ to 220℃ Usage Screw Compressors, Blowers, Gearboxes, Pumps, Hydraulic Motors
Hardness Shore A 85–95 (PTFE Lip Matrix) Type Radial Lip Stainless Steel Shaft Seal

 

The CFKS Stainless Steel Oil Seal. Unlike standard rubber seals that depend on garter springs to maintain radial sealing force, this design utilizes a pre-formed PTFE lip contact zone that maintains balanced radial contact pressure under high circumferential speeds. As the shaft rotates at elevated RPMs, spiral micro-grooves machined on the PTFE lip create a hydrodynamic pumping effect, continuously pushing fluid back toward the oil reservoir while preserving an optimal hydrodynamic lubricating film. This prevents thermal degradation caused by localized dry friction while guaranteeing zero dynamic leakage under high internal pressure.

While conventional elastomers like NBR and FKM suffer from premature compression set, hardening, or chemical attack under severe operating conditions, our high-performance PTFE compound blended with carbon/glass fiber offers exceptional structural stability. Encased in a corrosion-resistant 304 or 316 stainless steel casing, the seal resists oxidation, acidic lubricants, and synthetic compressor fluids across demanding operational profiles. The self-lubricating PTFE matrix drastically lowers the coefficient of friction compared to standard elastomeric polymers, eliminating shaft grooving and ensuring long-term wear resistance even in dry-running or poorly lubricated startup phases.

Achieving optimum operational lifespan requires precise alignment during installation to avoid damaging the specialized PTFE sealing lip. Because PTFE lacks the initial elasticity of rubber, a dedicated mounting sleeve or lead-in chamfer must be used to slide the seal smoothly over keyways, splines, or step shoulders without reversing or scoring the lip edge. Unlike conventional seals that require high shaft surface hardness and frequent replacement, the low-abrasion design minimizes shaft wear, eliminating the need for shaft sleeving or frequent regrinding. Proper initial dry-fit conditioning allows the PTFE lip to transfer a microscopic lubricating film to the shaft surface, maximizing continuous operating life and extending maintenance intervals.

Frequently Asked Questions (FAQ)

Why does my CFKS oil seal fail prematurely? Common causes and prevention tips2025-06-26T15:44:39+08:00

Premature oil seal failure can result from improper installation, poor shaft finish, incorrect material selection, or excessive pressure. To prevent this, ensure the shaft surface is smooth and within tolerance, use correct tools during installation, and choose seals made from materials compatible with your media and temperature.

How to correctly install a CFKS industrial oil seal to avoid leakage2025-06-26T16:04:32+08:00

Always clean the shaft and bore before installation. Use appropriate seal drivers to avoid deformation. Lubricate the lip before fitting to reduce friction during the first rotation. Ensure the seal is seated evenly and not tilted to avoid leaks.

What to do when your CFKS hydraulic seal is leaking under pressure2025-05-20T16:33:14+08:00

Check if the pressure exceeds the seal’s rated limit. Examine for wear, hardening, or improper installation. Replace the seal if damaged, and consider upgrading to a high-pressure CFKS seal variant. Also, verify that the housing and shaft are properly aligned.

How to choose the right CFKS oil seal for extreme operating environments2025-05-20T16:34:39+08:00

For high temperatures, aggressive chemicals, or abrasive environments, choose CFKS seals made of FKM, PTFE, or high-performance elastomers. Consider using seals with protective dust lips or metal casing. Our team can recommend the best fit for your application.

CFKS Seal Manufacturing Co., Ltd.
https://cfksseals.com/
Email: cfksnacy@gmail.com  Mobile/WhatsApp/Wechat: (86) 188-3097-5917
Stainless Steel Oil Seal Size List
SIZEMaterialProduct
8*18*6Metal HousingPTFE Stainless Steel Oil Seal
10*20*7Metal HousingPTFE Stainless Steel Oil Seal
10*20*5Metal HousingPTFE Stainless Steel Oil Seal
10*22*7Metal HousingPTFE Stainless Steel Oil Seal
8*22*7Metal HousingPTFE Stainless Steel Oil Seal
8*22*8Metal HousingPTFE Stainless Steel Oil Seal
10*22*7Metal HousingPTFE Stainless Steel Oil Seal
12*22*6Metal HousingPTFE Stainless Steel Oil Seal
12*25*7Metal HousingPTFE Stainless Steel Oil Seal
10*25*7Metal HousingPTFE Stainless Steel Oil Seal
14*25*5Metal HousingPTFE Stainless Steel Oil Seal
15*25*7Metal HousingPTFE Stainless Steel Oil Seal
10*26*7Metal HousingPTFE Stainless Steel Oil Seal
15*26*7Metal HousingPTFE Stainless Steel Oil Seal
14*24.1*6Metal HousingPTFE Stainless Steel Oil Seal
16.5*27*7Metal HousingPTFE Stainless Steel Oil Seal
18*35*10Metal HousingPTFE Stainless Steel Oil Seal
20*35*7Metal HousingPTFE Stainless Steel Oil Seal
20*35*8Metal HousingPTFE Stainless Steel Oil Seal
22*35*4Metal HousingPTFE Stainless Steel Oil Seal
22*35*5Metal HousingPTFE Stainless Steel Oil Seal
22*35*7Metal HousingPTFE Stainless Steel Oil Seal
22*35*8Metal HousingPTFE Stainless Steel Oil Seal
22*35*9Metal HousingPTFE Stainless Steel Oil Seal
22*35*10Metal HousingPTFE Stainless Steel Oil Seal
25*35*7Metal HousingPTFE Stainless Steel Oil Seal
25*35*8Metal HousingPTFE Stainless Steel Oil Seal
25*35*10Metal HousingPTFE Stainless Steel Oil Seal
25*36*7Metal HousingPTFE Stainless Steel Oil Seal
25*37*7Metal HousingPTFE Stainless Steel Oil Seal
25*38*4.5Metal HousingPTFE Stainless Steel Oil Seal
25*38*7Metal HousingPTFE Stainless Steel Oil Seal
85*110*13Metal HousingPTFE Stainless Steel Oil Seal
85*110*14Metal HousingPTFE Stainless Steel Oil Seal
88*110*12Metal HousingPTFE Stainless Steel Oil Seal
90*110*8Metal HousingPTFE Stainless Steel Oil Seal
90*110*10Metal HousingPTFE Stainless Steel Oil Seal
90*110*12Metal HousingPTFE Stainless Steel Oil Seal
90*110*14Metal HousingPTFE Stainless Steel Oil Seal
92*110*8Metal HousingPTFE Stainless Steel Oil Seal
92*110*10Metal HousingPTFE Stainless Steel Oil Seal
92*110*12Metal HousingPTFE Stainless Steel Oil Seal
95*110*8Metal HousingPTFE Stainless Steel Oil Seal
95*110*10Metal HousingPTFE Stainless Steel Oil Seal
95*110*12Metal HousingPTFE Stainless Steel Oil Seal
87*112*12Metal HousingPTFE Stainless Steel Oil Seal
80*115*10Metal HousingPTFE Stainless Steel Oil Seal
125*160*12Metal HousingPTFE Stainless Steel Oil Seal
125*160*15Metal HousingPTFE Stainless Steel Oil Seal
130*160*10Metal HousingPTFE Stainless Steel Oil Seal
130*160*12Metal HousingPTFE Stainless Steel Oil Seal
130*160*14Metal HousingPTFE Stainless Steel Oil Seal
135*160*12Metal HousingPTFE Stainless Steel Oil Seal
130*165*12Metal HousingPTFE Stainless Steel Oil Seal
135*160*14Metal HousingPTFE Stainless Steel Oil Seal

 

MESSAGE

Go to Top