SAN YONG SEAL HYDRAULIC OIL SEAL

PRODUCTBROCHURE

SOURCE FACTORY/TOP-QUALITY SEALING

河北三永新材料科技有限公司Hebei Sanyong New Materials Technology Co., LTd.

Company Profile >>>

Hebei Sanyong NewMaterials Technology Co.,LTDocated in Wencheng Development Zone,Jing County,HengshuiCity,HebeiProvince,ithasamodernproductionbasecoveringanreaofl2osquare meters.With25yearsofindustryexperience inthesealingparts field,ithasdeveloped intoatrusted sealing parts production and customization service provider for global customers.

The company focuseson the core business of sealing parts.Its products are sold farand wide in the global market andare widelyused inkey industrial fieldssuchasvalves,metallrgy,petrochemicals,and mechanical parts.Themain products includevalvesealingparts,specialsealingpartsformetalurgy,corosion-resistantsealingpartsforpetrochemicals, mechanical partssealingparts,as wellasaseriesofproductssuchasCNCnumericalcontrolcutingplates,inflatable sealing rings,and fabric-reinforced diaphragms.

Thecompany strictlyadheres to international standards and has successfully passed ISO9oolquality management systemcerticationCEertication,OHSertiationdetiicaion,stablsingafull-processde quality control system.Relyingon itsown production factory,allprocesses fromraw material selection to finished product inspection are carried out Strictstandards ensure stable and reliable product quality,meeting international environmental protection and safety requirements.We have the ability to respond quickly to in-stock situations. Itcanefficiently meet the urgent supply demands of customers.At the same time,we are deeply engaged in customized services.Our professional team will precisely optimize solutions basedon the specific working conditions of

customers,providinghighlyadaptable and high-performance sealing solutions for various complex mechanical scenarios. This helps global customers enhance the operational efficiencyand safety stability of their equipment and smoothly navigate the international market.

1.Westriveforexcellence in quality inspection throughout the entire process
2. Strict quality control leadstoexcellence
3.Detail control and qualitytraceability
4.Internationalcertification ensuresimpeccablequality
5. Strive for excellence; everypieceisamasterpiece
1.Technology-drivenand innovation-led
2.Continuouslyresearchand develop,iterateandupgrade
3.Craftsmanshipandinnovation empowerthefuture
4.Breakthroughtechnical barriersandleadthe industrybenchmark
5.Customizedinnovation tomeetdiverseneeds

1.Honestyisthe foundation, and we fulfill our promises andkeepourword 2.Treateachothersincerely andachievewin-win development 3.Remainsteadfastinour originalaspirationandestablish ourbusinesswith integrity 4.Keeppromisesandliveuptotrust 5.Honest operation builds brandreputation

Corporate philosophy >>>

Core values

Honestyasthe foundationInnovationasthe soul Quality as the foundation Win-win is the way.

Corporate mission

Empower industrial upgrading with professional sealingtechnologyand providesafeand reliable sealing solutions for global customers.

Business Vision

To become an internationally leading expert in customizingsealsand createabenchmarkbrand ofhigh qualityandhigh reliabilityin theindustry

QUALIFICATIONCERTIFICATE

PRODUCTCATALOGUE

PRODUCTCATALOGUE

PRODUCTCATALOGUE

MATERIALINTRODUCTION

The material of the sealed component

The media resistanceand operating temperature range of sealing material largelydepend on the composition of its formulaandtheselection ofthe base rubber.By changing the formulaand thebase rubber,specific material propertiesrequired forcertainapplication scenarios can be achieved.Improving acertain propertyofthe rubber,such as low-temperature performance,may causeother properties,such as oil resistance,todeteriorate.Therefore,when developing sealing materials,various factors need to be comprehensively considered toachieve the bestperformance.

The mechanical properties ofsealing materials will change due to mediaand temperature.This is more important forthe Workingreliabilityofthesealing piece than the initial valueof the material.Asfor what extentthematerial changecan be tolerated,itshouldbeconsidered basedon specific application scenarios,such as the sealing form, whether it is static or dynamic sealing,the required lifespan,the sealing medium,etc.

聚氨酯 (PU)

Polyurethane materials possess excellent mechanical properties.Their tensile strength,shear strength,compressive strength and wearresistance areall very high.The operating temperature range is from - 3 0 ^ { \circ } { C } to + 8 0 ^ { \circ } { C } #

Polyurethane isresistant to the following media:mineral oiland grease,fire-resistant liquid HFAand HFB up to + 5 0 ^ { \circ } { C } Polyurethane is not resistant to the following media:water above + 5 0 ^ { \circ } { C } ,alkali,acid,except for water-resistant polyurethane.

丁腈橡胶 (NBR)

Nitrilerubber has excellntoilresistanceand can be compatible with most mineral-based oils and esters.It is the most commonly used sealing material in hydraulic and pneumatic applications.Its normal operating temperature ranges from \scriptstyle - 3 0 ^ { \circ } \mathbf { C } to + 1 0 0 ^ { \circ } { C } ,and canreach + 1 2 0 ^ { \circ } { C } for a short period. Special rubber compounds can be u sed at extremely low temperatures down to - 5 5 ^ { \circ } \mathbf { C }

The acrylonitrile content of nitrile rubber is between 1 8 % and 5 0 % .The commonly used range is 2 8 % to 3 8 % # The highertheacrylonitrile content,thebeter theoilresistance of therubbercompound,butthecompression permanent deformation increases.

Nitrilerubberis resistant to thefolowing media:mineraloil,vegetableoil,animal oil,oilesters/fats fire-resistant liquid HFB and HFC,boiling water,seawater.

Nitrile rubber is not resistant to the following media:aromatic hydrocarbons and amine-containing hydrocarbons,ketones,amines,fire-resistant liquid HFD.

氟橡胶 (FKM)

The characteristics of fluororubber are high temperature resistance,weather resistance,ozone resistance and chemical medium resistance.Its working temperature can reach + 2 4 0 ^ { \circ } { C } .Fluororubber is resistant to almost all mineral-basedand synthetic-based hydraulicoils,but ithascertain limitations whenexposed to water vapor,hot waterorlow-temperatureconditions.Itslow-temperatureresistance is limited,andthecompatibility with water Vapor and hot water is moderate.If these application scenarios are encountered,special fluororubber should beselected.

Fluororubber is resistant to the folowing media:mineral oiland synthetic-based oiland esters,fire-resistant liquid HFB,fueloil,lkanes,aromatic hydrocarbonsandchlorinatedhydrocarbons,mostinorganicacidixtures

Fluororubber is not resistant to the follwing media:ketones,amines,anhydrous ammonia,low-molecular organic acids such as formic acid and acetic acid.

聚甲醛 (POM)

The characteristics of polyoxymethyleneare high rigidity,good wear resistanceand excellnt self-lubrication.Its working temperature ranges from - 4 0 ^ { \circ } { C } to + 1 0 0 ^ { \circ } \mathbf { C } ,and canreach + 1 2 0 ^ { \circ } { C } in the short term.Polyoxymethylene is resistanttoorganic solventsandoil,butnottostrongacids,strongalkalis.Itwillslowlyhydrolyze whenexposedto hot waterforalong time,and is notresistant toultravioletradiation.Itis prone toagingandbecomingbrittle.

Polyoxymethylene isesistanttothefollowing media:mineraloil,gasoline,ethanol,acetone,andmostalipatic hydrocarbon solvents.

Polyoxymethylene is notresistant to the follwing media:concentrated hydrochloric acid,concentrated sulfuric acid,concentrated sodium hydroxide solution,high-temperature steam,and ultraviolet rays.

MATERIALINTRODUCTION

聚四氟乙烯 (PTFE)

Fluoroplastics have extremely excellentchemical stability.Only liquid alkali metals andcertain fluorine compounds can erode them under high pressure and high temperature.Their operating temperature range is from - 2 0 0 ^ { \circ } { C } to + 2 6 0 ^ { \circ } { C } Compared with other sealing materials,polytetrafluoroethylene has a very smallfriction coeficient,and the static friction and dynamic friction are almost the same.

Polytetrafluoroethylene hasnodriving orcold flow phenomenon.Thatis,PTFEcontinues todeformand increase in size over time under a certain load,and this phenomenon is closely related to temperature.

Pure polytetrafluoroethylene generally cannot be used as a hydraulic sealing material. Only filled polytetrafluoroethylene can beused.Commonlyusedones include bronze powder-filledPTFE and glass fiber-filled PTFE.These fillersrduce thetermalexpansioncoeficient,improvetermalconductivity,ncreasewearesistance, and enhance cold flow (creep) resistance.

Polytetrafluoroethylene materialhas no elasticity,so it isalways used together with rubber elastic materialsor metalspringstoprovide therequired preload.

四氟铜粉 ( \mathbb { P } \mathbb { T } \mathbb { E } + \mathbb { B } \mathbb { Z } )

The characteristics of tetrafluoro copper powder include the corrosion resistance,low friction,and thermal conductivityofpolytetrafluoroethylene,as wellastheconductivityand wearresistanceofcopperpowder.Its working temperature range is - 1 9 6 ^ { \circ } { C } to + 2 6 0 ^ { \circ } { C } ,and it can reach + 3 0 0 ^ { \circ } { C } in the short term.Tetrafluoro copper powder is resistantto moststrong acids,strong bases,andorganic solvents.However,inhigh-speedand high-load friction conditions,the wear resistance of pure PTFE is insuficient.Ading copper powder can enhancethe load-bearing capacity and wearresistance.However,copper powder willto some extentreduce the material'sability to withstand strong oxidizing media (such as concentrated nitric acid).

Tetrafluoro copper powder is resistant to the folowing media:sulfuric acid,hydrochloricacid,phosphoric acid, sodium hydroxide solution,ketones,esters,and most organic solvents.

Tetrafluoro copper powder is not resistant to the following media: molten alkali metals,elemental fluorine,and perfluorinated compounds under high temperature and high pressure.

酚醛树脂 (PF)

Thecharacteristics of phenolic resin areexcelent heatresistance,high rigidity,and high dimensional stability. Itsworking temperature (for thermosetting type) can reach + 1 5 0 ^ { \circ } { C } to + 2 0 0 ^ { \circ } { C } for long-term use,and + 2 5 0 ^ { \circ } { C } for short-term use;forthermoplastic phenolic resin,itneeds tobe curedbeforeuse.Phenolicresin isresistanttoacids (exceptconcentratednitricacidandconcentratedsulfuricacid),ndorganic solvents,buthaspooralkaliresistance,is notresistantto strongoxidants,andhas high britlenessand insufficient toughnessItneeds tobemodified(suchas adding glass fibers or rubber) to improve its performance.

Phenolicresin isresistanttothe following media:diluteacids,ethanol,gasoline,mineraloil,and mostaliphatic hydrocarbon solvents.

Phenolicresin is notresistantto the following media:concentratednitric acid,concentrated sulfuric acid,strong alkaline solutions,ketones,esters,and high-temperature steam.

Carbon steel

The characteristics ofcarbon steel are high strength,low cost and easy processing.The working temperature range (for ordinary carbon steel) is from - 2 0 ^ { \circ } { C } to + 4 2 5 ^ { \circ } { C } ,and for low-carbon steel,it can reach + 5 5 0 ^ { \circ } { C } asthe carbon contentincreases,thehardnessand strength increase,buttheplasticityandtoughness decrease.Carbonsteel is resistanttodryair,butitispronetocorrosioninhumid,acidicoralkalineenvironments.Itneeds tobeprotectedby methods such as galvanization or painting.

Carbonsteel isresistant to the following media:dry air,inert gases (suchas nitrogen),and neutral liquidsat normal temperature without corrosion (such as pure water).

Carbon steel is not resistant to the folowing media:acid solutions (such as hydrochloric acid,sulfuric acid), alkaline solutions (such as sodium hydroxide),salt water,and humid sulfur-containing air.

POLYURETHANEELASTOMERPHYSICALPROPERTIESTABLE

The shape of the product should be smooth and flat.The working surface must not have any blemishes,and the interior should not contain impurities,bubbles,cracks or any other defects.

The seals and other products should be stored in a dry environment,avoiding exposure to sunlight,rain,and contact with acids,alkalis and solvents.The elastic parts should be stored ina free state.

SEALING ELEMENTSANDPOLYURETHANEPRODUCTS

In the sealing product standards,the tolerance for the size dimensions is not specified In such cases, the tolerance shall be as per the table below:

The working surface of the sealed product should be smooth without any defects suchas bubbles,impurities,or unevenness. The appearance quality of the non-working surfaces of the sealed products should comply with the requirements specified in the following table:

Storage

1.During storage,the temperature in the warehouse should be maintained between -15 and + 3 5 degrees Celsius,and the relative humidity should be kept between 5 0 % and 8 0 % 2.During transportation and storage,the product should be protected from direct sunlight,rain and snow,and should not come into contact with substances such as acids, alkalis,oils and organic solvents that may affect the quality of the rubber compound.It should also be kept at least 1 meter away from heat sources.

ODU/YXD SEALINGRINGFORHOLES

Productstandards:

Guide ring Back-UP ring 支承环 图 0 R R Ha

This standard is applicable to the
sealing components in the hydraulic
cylinderpiston that perform
reciprocatingmotion. D Working pressure: 3 2 { { M p a } } Working medium:Hydraulic oil,water Product hardness: { 8 5 } \mathbf { A } ± { 5 } （204 H Standard source:JB/ZO4264-86 ReplacingQ/ZB248-77

ODU/YXDSEALINGRINGFORHOLES

KDASCOMBINEDPISTONSEALINGRING

KDAS combined piston seal

KDAS is a 5-piece combination two-way piston seal,with anti-extrusion rings on both sides of the rubber sealing ring to prevent the rubber ring from beingsqueezed into the gap and damaged,and the guide sleeve of the outermost L-ring ring.

Working pressure: 500MPa (500 bar) Speed:up to \mathbf { 0 . 5 m / s } （20 Hardness:ShoreA grade 78 degrees

Installation

Installing the piston seal KDAS is simple and easy.Itis basically the sameas installing other combined seals.Please follow the illustrated sequence for installation.

1、防挤圈
2、橡胶密封圈
4、L形支承圈
3、防挤圈
1.Anti-squeezing ring
2.Rubber sealing ring
3.Anti-squeezing ring
4.L-shaped support ring

Size data

Preferhigh-qualitymaterials

High-qualityrawmaterials O O Nitrilerubbersealingringfoentralpart Polyurethane elastomer in the middle part, Good sealing performance,resistant
External opening ring,glass fiber wear-resiattltl to twisting and extrusion
Enhancedthermoplasticpolymerasytoistall

KDASCOMBINEDPISTONSEALINGRING

ST-DTYPECOMBINEDSEALINGRING (SPGO)

ST-D Combined seal

The ST-D combined seal consists of two parts.The combined seal is composed ofa moving ring and an O-ring. The O-ring

provides the elasticity. It functions as a piston seal andshould be used in both double-acting pistons and single-acting pistons.

Materials

Installation

During installation,first insert the O-ring into the groove,then shape the moving ring into an oval shape and insert it into the groove.By using aspecialized installationtool,itis convenient to install the small-diameter combined sealing ring.

Tolerance

ST-DTYPE COMBINED SEALINGRING (SPGO)

ST-DTYPE COMBINED SEALING RING (SPGO)

OKCOMBINEDPISTONSEALINGRING

OK Combination seal

Usage and Performance:Primarily used for sealing the piston of hydraulic cylinders.This seal consists of two components. One is a hard-opening sealing ringmade of special materials, and the otherisa rubber O-ring that provides elasticity.Due to the open structure of the sealing ring,it solves the problem of the need for special tools for installing the (SPGO).The OK seal has a small installation space and simple grooves. The installation is simple and convenient,no tools are required, itcanresist impactloads,has lowfrictionresistance,no stickiness phenomenon,and has excellentwearresistanceperformance.

Working Speed: \mathbf { l m / s }

Working Pressure: \mathbf { 0 - 8 0 \ M p a }

Medium:Petroleum-based hydraulicoil, non-flammable hydraulic fluid,environmentallyfriendly and safe hydraulic fluid (biological oil),water and others, depending on the material of the sealing ring.

0
0

SPGWPISTONSEALINGASSEMBLYSEALINGRING

SPGW Combined sealing ring

The SPGW type bidirectional piston seal is composed ofPTFE piston sealing rings,rubber springs and two anti-extraction retaining rings,and isused forpiston sealingin hydraulic cylinders.SPGW isa high-pressure operating seal that improves the scraping oil capacity of SPG.

Application scope:Suitable for bucket arm cylinders, boomcylinders,bucketcylindersofforklifts,liftingcylinders of bulldozers,flat shovel cylinders,sliding cylinders of cranes, hydraulic suspensioncylinders,dump trucks,presses,injection moldingmachines,etc.

Working pressure: 4 0 { M P a }

Repetitive speed: 1 . 5 ~ { { m } / { s } }

Installation: This type of seal can use a complete piston. Toavoid damage to the sealing lip,measures should be taken toavoid sharp edges duringinstallation.

K16PISTONTHREE-PIECEASSEMBLYOILSEAL

K16Combined Oil Seal

K16 is a three-piece double-acting compact seal, consistingofa fabric-reinforced elastic sealing element and two thermoplastic guiding support rings.

Product advantages

Low friction No stickiness or slippage Enhances wear resistance Excellent dynamic and static sealing Long service life

Application

Mining equipment, steel industry, Marine hydraulic and earthmoving equipment

Installation

TheKl6 profile is designed for installation in either closed or open grooves,and takes into accountthe indicated directoryinformation.For dimensions smaller than 5 0 {mm } in diameter,we recommend usinga grooved design.Theassembly toolsmustbemadeofsoftmaterialsandwithout sharp edges,which isof greatimportance.

Before installation,the sealing elements must be oiled with system oil.

K20TYPETHREE-PIECECOMBINEDOILSEAL

K20 type three-piece combined oil seal

K20 isa three-piece bidirectional combined seal,consisting of an nitrile rubber sealing ring and two thermoplastic plastic guide rings.

Product advantages

Economic sealing and guiding solutions Simple full-tank design,integral piston Can be used on small sections Easy to install

Installation

Since the guide ring is of an open type,it can be easily installed onto the

integral piston.Itis very important that the installationtoolmustbemadeofsoftmaterialandhave no sharp edges.Before installation,this seal must be coated with the system'spressure oil.

Product cross-sectional view

DPMFIVE-PIECEPISTONSEALINGRING

The DPMis composed of five parts and isa bidirectional sealingand guidingelement.Itconsistsof1rubberring,2 supportingringsand2 guidingrings.The rubberring can provide good sealing both dynamically and statically.The supporting rings can prevent the rubber ring from being pushed into the sealing gap.The guiding rings' function is to guide the piston within the cylinder and absorb radial forces.When therubber ring is under pressure,it pushes the supporting ringand guidingring towards the cylinder wall.Therefore, even if the combined seal isworn out,pressure can still be replenished.

The prominent feature of the piston combined seal is that the retaining ring,guiding ring and sealing element are installed in a groove,which greatly saves installation space.It is commonly used in integral pistons and cylinders with a smaller diameter. Noother seals need to be installed on thepiston.Itismainly usedinhydrauliccylinderswithlowmotionspeed,strict requirementsforinternalleakage,andlimitedinstallationspace for piston seals.Such as bulldozers,excavators,loaders, hydraulic gates and agricultural machinery,etc.

U+SCOMBINATION SEALS

\mathbf { U } { + } \mathbf { S } is a combined type sealing ring. The star-shaped ring ensures the pre-compression amount under low pressure or vacuum conditions.The system pressure is transmitted to the sealing lip of the U-shaped ring through the star-shaped ring.The U-shaped ringis loaded as the system pressure increases,and the sealing effect is basically independent of temperature changes.When theU-shaped ring is slightly worn,the star-shaped ringplays a compensatory role to ensure its sealing effect.

Advantages: \mathbf { U } { + } \mathbf { S } has excellent wear resistance and compression resistance.It is insensitive to vibration loads and pressure peaks.It hasan ideal sealing effectinthe absence ofload and atlow temperatures,and is suitable forharsh working environments. It is easy to install.

Working medium:Petroleum-based hydraulic oil,emulsion not suitable for environmentally friendly,safe,and biological oils.

Application scope:Widely applicable to agricultural machinery, hydraulic equipment, petroleum machinery,etc.

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1.6um/RaMAX -0.3RMAX(2PL)
0.8um/
RaMAX0.1-0.2umN √Ra
，\ ↑ 20° 8p
。
0S
18365991625
HA±0.3

U+SCOMBINATION SEALS

KRBIDIRECTIONALPISTON COMBINED SEALINGRING

The KR type polyurethane material piston assembly seal is a double-acting piston seal with the same installation grooves as the OK type and (SPGO) etc. (in compliance with ISO7425-1 standard),and is particularly suitable formediumload conditions.The KRassemblyseal,asabidirectional seal,hasexcellent dynamic and static sealing performance,and its sliding ringmaterial isverywear-resistant.The KR piston sealcanbeused inaccumulators.TheKRassembly seal consists of a high-modulus polyurethane sliding ringwith improved lubrication properties and a rectangular-sectionnitrile rubber elasticreinforcement ring.TheKRpistonassemblyseal canbeused in cylinders oraccumulators.Itis particularly suitable forapplications with strict requirements for internal leakage.

Productadvantages:Extremely high dynamic and staticsealingperformance,also suitable forunidirectional action,excellentwearresistance.

IDU/YXdAXIALSEALINGRING

Productstandards

This standard is applicable to the sealing components that perform reciprocating motioninthehydrauliccylinderpiston.

Operating pressure: <= 3 2 { { \mathbf { M P a } } }

Operatingmedium:Hydraulic oil, water

Product hardness: { 8 5 } \mathbf { A } ± { 5 } Standard source:JB/ZO4264-86 Replaced by Q/ZB249-77

IDU/YXdAXIALSEALINGRING

ST-d TYPECOMBINED SEALING RING (SPNO)

ST-d type combined seal

The ST-d combined seal is a two-piece combined seal, consisting of a moving ring and an O-ring.The O-ring provides elasticity.

It serves as a piston seal and is used in both double-acting pistons and single-acting pistons.

Materials

ST-d TYPE COMBINED SEALING RING (SPNO)

ST-dTYPE COMBINED SEALING RING (SPNO)

UHSHYDRAULICCYLINDERSEAL

UHS is the most commonly used oil seal in hydraulic cylinders.Itisa typical lip-type sealing component that can achieve excellent sealingperformance whetherit is used for the piston or the piston rod.It is mainly applied in the sealingof pistons orpiston rods in heavy-dutymobilemachineryor industrialhydraulics.

Mainadvantages:

1.Excellentwearresistance
2.Insensitive to impact loads and pressure peaks
3.High resistance to extrusion
4.Lowpermanent compression deformation
5.Suitable for harsh working conditions
6.Easy to install

Productmedium:Hydraulicoil Product hardness:Shore A 9 0 ± 2

UHSHYDRAULICCYLINDERSEAL

UNSHYDRAULICOILSEALSEALINGRING

TheUNShydraulicoil seal ringiswidelyused in the hydraulic systems of general mechanical equipment.Due to its structural design that is suitable for both piston sealing and piston rod sealing,it is recommended not to be used in working conditions with high sealing requirements.Its sealing effect isnot as good as the dedicated piston seal or the dedicated piston rod seal component.

Main advantages:

1.Strongversatility,easy to select
2.Good wear resistance
3.Small compression deformation
4.Extremely convenient installation

Surface speed: <= 0 . 5 \ { m / s } Hardness: 9 2 \mathbf { A } ± 2 （20

C

RUBBERUNSHYDRAULIC OIL SEAL

RUBBERUNSHYDRAULICOIL SEAL

RUBBERUNSHYDRAULICOIL SEAL

RUBBERUNSHYDRAULICOILSEAL

PUUNSHYDRAULICOILSEAL

PUUNSHYDRAULICOILSEAL

PUUNSHYDRAULICOILSEAL

PUUNSHYDRAULICOILSEAL

PUUNSHYDRAULIC OIL SEAL

PUUNSHYDRAULIC OIL SEAL

PUUNSHYDRAULIC OIL SEAL

PUUNSHYDRAULICOIL SEAL

PUUNSHYDRAULICOILSEAL

V-CLAMP FABRIC SEAL

Product application:Used for sealing the piston and piston rod ofreciprocatingmotionultra-high pressure hydraulic cylinders

Application scope:Metallurgy,mining,general equipment hydrauliccylinders

Product hardness: 9 5 ± 2 ^ { \circ } \mathbf { A }

B

Workingpressure: { <= } 6 0 \ \mathbf { M P a }

Workingmedium:Hydraulic oil

Standard source:HG4-337-66 (Type A) G51-3

V-CLAMP FABRIC SEAL

JATYPENOSKELETONDUSTSEALRING

Product application:Used for dust prevention of the piston rod of reciprocating hydraulic cylinders

Hardness: { \bf H } { \bf S } 8 5 ^ { \circ } { \bf A }

Standard source:Agricultural machineryindustrystandard

Abbreviation:JAd60

H 00