Custom Oil Seal

Custom Oil Seal

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Custom Oil Seal

NNK is a leading supplier of high quality and high performance oil seals, rotary shaft seals, and hydraulic and pneumatic seals.
Our company's reputation for excellence is built on our ability to provide our valued customers with the most efficient manufacturing solutions to meet their most demanding applications. Our primary goal is to continually exceed our customers' expectations by providing them with high performance gasket and seal products, competitive pricing, on-time delivery and superior customer service. NNK is committed to consistently meeting all of your blueprint specifications and tolerance requirements.

NNK specializes in custom metric and standard oil seals, rotary shaft seals, grease seals, wiper seals, end cap VK-HP seals, V-seals (V-rings), U-packing seals and Gamma rings for a wide range of industries and applications. Oil seals are also known as shaft seals, radial oil seals and lip seals. Rotary oil seals are designed to separate the space between components in mechanical equipment.


Oil Seal / Rotary Shaft Seal Materials

Oil seals are used to seal around rotary shafts and keep oil-based lubricants inside the axle, engine, etc. Grease seals are used to seal more viscous grease lubricants in rotary shaft applications. Simply put, oil seals are barriers that perform four functions; retain lubricant or fluid, exclude contaminants, separate fluids and limit pressure. These seals help keep machines running as smoothly as possible. NNK Custom Oil Seals' oil seals can be used on any type of hydraulic oil sealing machinery; pumps, automobiles, cylinder manufacturers, etc.

 

Custom Oil Seals

NNK Custom Oil Seals offers rotary oil seals and shaft seals in a variety of styles, sizes and materials to fit your application. Our selection of fluid sealing products are available in a wide range of rubber polymers including Nitrile Rubber (NBR), Viton ®, Fluoroelastomer (FKM), Silicone (VMQ), Neoprene®, Chloroprene (CR), EPDM, Polyacrylic (ACM), SBR, Fluorosilicone (FVMQ), Polyurethane (AU/EU) hydrogenated nitrile butadiene rubber (HNBR) and methyl vinyl silicone rubber (MVQ). Our oil seals are made from the highest quality springs and housings made of carbon steel, stainless steel or FDA approved stainless steel. All products are manufactured to ASTM D2000 standards and NNK can provide custom oil and rotary shaft seals to your OEM drawings and specifications.


Common styles of oil seals

If you are unsure of the style of oil seal you need, feel free to send us an actual sample of your seal and NNK will reverse engineer the seal for you. We offer cost effective alternatives to brand name seals and are able to consistently provide our customers with quality seals at a significant cost savings. The most common seal styles are; TC, SC, TA, SA, TB, SB and VC. seal types TA, SA, TB and SB all have bare steel on their OD width. NNK can handle different options of widths; ground OD, highly polished bright steel, coated OD with rubber to fill small cracks in the OD housing. Other types of common seals have rubber covered OD widths.

 

Oil/Shaft Seal Styles

TC type double lip, rubber coated with spring Low pressure double lip with garter spring to prevent contamination Rubber covered outside diameter improves sealing ability of the housing The inner surface of the steel housing is not completely covered with rubber.
SC-type single lip with spring-loaded rubber coating Low-pressure single lip with snap-on spring Rubber-covered outer diameter improves the sealing ability of the housing. The inner surface of the steel housing is not completely covered with rubber.
KC type double lip, rubber coated, without spring Non-pressure double lip without retaining spring prevents contamination. Rubber covered outer diameter improves sealing ability of the housing. Inner surface of steel housing is not completely covered with rubber.
VC type single lip, rubber coated, no spring Non-pressure single lip without garter spring. Rubber-covered outer diameter improves the sealing ability of the housing. The inner surface of the steel housing is not completely covered with rubber.
Type TB double lip, metal housing with spring Low-pressure double lip with garter spring to prevent contamination Precision ground metal outside diameter with introduced chamfers for easy installation. Stainless steel available on special request.
SB type single lip with spring loaded metal housing Low pressure single lip with garter spring. Precision ground metal O.D. with introductory chamfer for easy installation. Stainless steel available on special request.
KB type double lip, metal housing without spring Non-pressure double lip without garter spring prevents contamination. Precision ground metal outside diameter with introductory chamfer for easy installation. Stainless steel available on special request.
VB type single lip, metal housing, no spring Non-pressure single lip without garter spring. Precision ground metal O.D. with introductory chamfer for ease of installation. Stainless steel available upon special request.
TA type double lip, full metal housing with spring Low-pressure double lip with snap-on spring for protection against contamination Precision ground outside diameter with added inner housing to provide greater structural rigidity and durability. Stainless steel available on special request.
SA type single lip, all metal housing with spring Low pressure single lip with snap-on spring. Precision ground outside diameter with additional inner housing to provide greater structural rigidity and durability. Stainless steel available on special request.
KA type double lip, all-metal housing without spring Non-pressure double lip without retaining spring prevents contamination. Precision ground outside diameter and increased inner housing provide greater structural rigidity and durability. Stainless steel available on special request.
VA type single lip, all metal housing, no spring Non-pressure single lip, no garter spring Precision ground outside diameter with additional inner housing to provide greater structural rigidity and durability. Stainless steel available upon special request.

 

Rotary shaft seals and oil seals market

NNK's custom oil and shaft seals are currently used in the following industries:

Gearboxes
Fuel pumps
Screw mixers and dryers
Caster wheels
Drilling spindles
Electric motors
Propeller shafts
Transfers
Compressors
Liquid Handling Rotation
Mills
Vacuum Pumps
Fuel handling flexibility
Couplings
Earth rotor
Racing engine
Hydrostatic pressure
Joints
Agitator
Gear Pumps
Crankshafts
Hydraulic motors and pumps
Wheel hubs


We can provide custom molded designs for oil seals of any material and virtually any shape or size. Send your drawings for a quote or call to discuss product or material design ranges with our engineering department. NNK looks forward to your message!

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    Mr ken (sales manager): +86 156 0767 8250