Guangzhou Weihong Machinery Equipment Co., Ltd. |
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3016792 6D170 Engine Crankshaft Front And Rear Oil Seals 6240-21-4250 Excavator Seal Kits
Specifiion
Model No | 6D170 |
Part No | 6240-21-4250 3016792 |
Product Number | Excavator Seal Kit |
Condition | 100% New |
Availability | in Stock |
Warranty | 6 months |
Apply to | Excavator |
Package | Inner - Plastic Bag; Outer - Standard Carton Box. |
Quality | Long lasting and reliable working life time |
Service | OEM |
Description
Operating temperatures for engine oil seals vary widely, depending
on engine design and loion within the engine. Typically, the rear
crankshaft seal is subjected to much higher temperatures than the
front seal. Oil sump temperatures vary considerably, depending on
provisions for oil cooling. This allows use of hydrogenated nitrile
(HNBR), silicone, or acrylic elastomers for some seals in
relatively low-temperature environments (120–140°C or 250–284°F).
Standard fluoroelastomers (FKM), bisphenol-cured VDF/HFP/TFE
terpolymers with 68–69% fluorine content, perform well in oil
service up to about 160°C (320°F). More resistant fluoroelastomers
are necessary for reliable long-term performance in more severe
environments.
Natural rubber seals and rings are suitable for air, acetylene,
cold ammonia gas, alcohols, inorganic salt solutions, sugar
liquors, castor oil, ethyl chloride, ethylene glycol, formaldehyde,
formic acid, hydrochloric acid, water, sea water, wines, and
spirits. Nitrile rubbers are suitable for organic solvents, petrol,
aviation turbine fuels, hydraulic oils, transformer coolants,
mineral oils, etc. High acrylonitrile and medium acrylonitrile
content nitrile rubbers are available which can be employed based
on the functional requirements of seals. Blends of synthetic
rubbers are also employed in formulating a compound depending on
specific performance requirements. Neoprene rubber seals are also
suitable for the fuels mentioned above. Nitrile seals are suitable
for high aromatic liquids. For extreme temperatures, fluoro-rubbers
(e.g., Viton) and silicone rubber seals are suitable. Thiokol
(polysulfide) rubbers are suitable for esters, ketones, lacquers,
and UV light in the case of static seals.
Characteristic
1.Low friction, high efficiency.
2.Superior sealing effect in high pressure.
3.Can be installed onto a solid piston without tools
4.Low density; High strength;
5.Low thermal expansion
More Product
Engine | Description | Part | Part | Part | Part | Part |
B3.9 | oil seal | 3900709 | 3904087 | 3904353 | 3935959 | 3937111 |
C8.3 | oil seal | 3353977 | 3353978 | 3802820 | 3900408 | 3900709 |
C8.3 | oil seal | 3901979 | 3904089 | 3904354 | 3906081 | 3908139 |
C8.3 | oil seal | 3908277 | 3909411 | 3914761 | 3921927 | 3921976 |
L8.9 | oil seal | 3925343 | 3925529 | 3925530 | 3926126 | 3927683 |
L8.9 | oil seal | 3933262 | 3942535 | 3968562 | 3970548 | 4025270 |
L8.9 | oil seal | 4089342 | 4955372 | 5265267 | 3920147 | 5303230 |
B5.9 | oil seal | 4991305 | 4982415 | |||
ISB6.7 | oil seal | 3933262 | 3955214 | 3968563 | 3970548 | 3973745 |
ISB6.7 | oil seal | 3973746 | 4089342 | 4890832 | 4890833 | 4890932 |
ISB6.7 | oil seal | 4899239 | 4955566 | 5259499 | 5338295 | 4938765 |
ISB6.7 | oil seal | 3934486 | 3921265 | |||
ISF | oil seal | 5265266 | 4980596 | 5255314 | 5255313 | 4946755 |
ISM | oil seal | 196641 | 3007759 | 3161772 | 3800969 | 3803894 |