Sealing Excellence, Securing Industry

CFKS J Type Oil Seal 140*158*9/14 J Type Polyurethane Dust Proof Oil Seal

CFKS J Type Oil Seal 140*158*9/14 PU Dust Proof Seal – Top-tier J Type Polyurethane Dust Proof Oil Seal with IP68 fabric layer. 140×158×9/14 German PU + spring-loaded lip blocks mud 100%. Direct drop-in for NOK SCY, NAK JY, TTO JA J Type Oil Seal. 140-158-9/14 Perfect for excavator swivel, wheel hubs & mining trucks. 3000h zero-failure life. Lifetime warranty, 48h shipping worldwide!  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 140*158*9/14 J Type Oil Seal  Packing 1 pc per bag

 

CFKS J Type Oil Seal 140*158*9/14 PU Dust Proof Seal – Ultimate J Type Oil Seal and J Type Polyurethane Dust Proof Oil Seal for extreme dusty environments. German cast polyurethane (95A) + reinforced fabric layer delivers IP68 mud-proof protection and 3000+ hours zero-failure life. Single-lip + multi dust lips + spring-loaded design outperforms NBR J seals by 5X in slurry conditions. Direct replacement for NOK SCY, NAK JY, TTO JA J Type Oil Seal series.

This heavy-duty J Type Dust Proof Oil Seal measures 140×158×9/14 mm (stepped lip), operates -40°C to +120°C, ≤12 m/s rotary speed. Spiral micro-textured fabric blocks sand, water, and concrete dust completely. Perfect J Type Polyurethane Oil Seal for excavator swivel joints, wheel loader hubs, mining trucks, agricultural harvesters, and concrete mixer shafts.

Trusted by 200,000+ global users. CFKS J Type Oil Seal offers lifetime warranty, 48-hour worldwide shipping, tariff-free to EU/USA. MOQ 5pcs, free samples + groove drawing. Bulk price drops 40% instantly. Upgrade to polyurethane J Type Dust Proof Oil Seal now – zero leaks, zero downtime!

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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