Sealing Excellence, Securing Industry

CFKS NBR J Type Rubber Oil Seal 38*50*5/9 J Type Shaft Seal Single Lip Oil Seal With Spring

CFKS NBR J type 38*50*5/9 rubber oil seal 38 50 5/9 is a spring-loaded 38×50×5/9 single lip shaft seal 38-50-5/9 designed for rotary applications. Made from oil-resistant NBR rubber, it ensures stable sealing force, effective oil retention, and long service life for industrial machinery.

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

Brand Name CFKS OEM  Accpetable
Material NBR FKM Silicone  Features  wear resistance
Dimensions Customized Certificate  ISO9001/TS16949
Type 38*50*5/9 J Type Oil Seal  Packing 1 pc per bag

 

The CFKS NBR J Type rubber oil seal 38*50*5/9 is a high-performance single lip shaft seal designed for reliable rotary shaft sealing applications. Featuring a garter spring, this J type oil seal maintains consistent radial pressure on the shaft, ensuring effective oil retention and minimized leakage during operation.

Made from premium NBR rubber, this J type shaft seal offers excellent resistance to mineral oils, lubricants, and wear. The spring-loaded sealing lip compensates for shaft runout and material aging, providing stable sealing performance and extended service life even under continuous operation.

CFKS J type single lip oil seals are widely applied in gearboxes, motors, pumps, reducers, and general industrial machinery where dependable oil sealing is required. With precise dimensions and strict quality control, this oil seal delivers consistent performance in various industrial environments.

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
J TYPE SEAL SIZE LIST
TypeSIZEMaterialSIZEMaterial
J Type8*18*7PU8*18*7NBR/FKM
J Type10*20*7PU10*20*7NBR/FKM
J Type12*22*7PU12*22*7NBR/FKM
J Type14*24*7PU14*24*7NBR/FKM
J Type16*26*7PU16*26*7NBR/FKM
J Type18*28*7PU18*28*7NBR/FKM
J Type20*32*9PU20*32*9NBR/FKM
J Type22*34*9PU22*34*9NBR/FKM
J Type25*37*9PU25*37*9NBR/FKM
J Type28*40*9PU28*40*9NBR/FKM
J Type30*42*9PU30*42*9NBR/FKM
J Type32*44*9PU32*44*9NBR/FKM
J Type35*47*9PU35*47*9NBR/FKM
J Type36*48*9PU36*48*9NBR/FKM
J Type38*50*9PU38*50*9NBR/FKM
J Type40*52*9PU40*52*9NBR/FKM
J Type45*57*9PU45*57*9NBR/FKM
J Type50*62*9PU50*62*9NBR/FKM
J Type52*64*9PU52*64*9NBR/FKM
J Type55*69*11PU55*69*11NBR/FKM
J Type60*74*11PU60*74*11NBR/FKM
J Type63*77*11PU63*77*11NBR/FKM
J Type65*79*11PU65*79*11NBR/FKM
J Type70*84*11PU70*84*11NBR/FKM
J Type75*89*11PU75*89*11NBR/FKM
J Type80*94*11PU80*94*11NBR/FKM
J Type85*99*11PU85*99*11NBR/FKM
J Type87*101*11PU87*101*11NBR/FKM
J Type90*104*11PU90*104*11NBR/FKM
J Type92*106*11PU92*106*11NBR/FKM
J Type95*109*11PU95*109*11NBR/FKM
J Type100*114*11PU100*114*11NBR/FKM
J Type105*121*13PU105*121*13NBR/FKM
J Type110*126*13PU110*126*13NBR/FKM
J Type115*131*13PU115*131*13NBR/FKM
J Type120*136*13PU120*136*13NBR/FKM
J Type125*141*13PU125*141*13NBR/FKM
J Type130*146*13PU130*146*13NBR/FKM
J Type135*151*13PU135*151*13NBR/FKM

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