Cov ntaub ntawv:
● FKM
● EPDM
● NBR
● AFLAS
● FFKM (230 Celsius Degree / 250 Celsius Degree / 300 Celsius Degree)
* Kom tau txais tus nqi tshiab& Yog xav paub ntxiv txog O-rings, thov hu rau Uttox Mechanical Seals los ntawm E-mail lossis Whatsapp.
● Email:info@uttox.com
● Whatsapp: +86-13656834410
*Kev Taw Qhia Txog *
Cov ntsaws ruaj ruaj muaj xws li dynamic thiab zoo li qub nplhaib ntsaws ruaj ruaj, feem ntau yog ua rau O-rings, V-rings, rectangular rings, wedge-shaped rings or trapezoidal rings.
Lawv lub luag haujlwm tseem ceeb yog: txhawm rau tiv thaiv qhov xau ntawm lub nplhaib txav thiab lub voj voog tig thiab lub nplhaib zoo li qub thiab lub caj pas; los them nyiaj rau deflection thiab vibration ntawm sealing nto kom zoo haum ntawm lub txav thiab zoo li qub nplhaib kawg ntsej muag.
Cov ntaub ntawv ntawm lub nplhaib sib khi feem ntau suav nrog elastomers (xws li roj hmab), plastics (xws li tetrafluoroethylene), fibers (xws li asbestos, carbon fiber), cov ntaub ntawv inorganic (xws li nthuav graphite) thiab hlau (xws li tooj liab, txhuas, stainless hlau, thiab lwm yam).
Cov kev xav tau ntawm lub cev thiab kev ua haujlwm ntawm cov khoom siv lub nplhaib sealing muaj feem xyuam rau cov khoom siv sealing nto.
1. Synthetic roj hmab
Roj Hmab auxiliary sealing nplhaib yog siv dav tshaj plaws auxiliary sealing nplhaib. Feem ntau siv roj hmab sealing nplhaib cov ntaub ntawv muaj xws li roj hmab nitrile, fluorine roj hmab, silicone roj hmab, thiab neoprene.
1-1 Nitrile roj hmab NBR, nitrile roj hmab yog cov roj hmab feem ntau siv. Nws yog copolymer ntawm butadiene thiab acrylonitrile. Raws li cov ntsiab lus ntawm acrylonitrile, nws tau muab faib ua ntau hom: qis acrylonitrile (butyronitrile-18), nruab nrab acrylonitrile (butyronitrile-26) thiab siab acrylonitrile (butyronitrile-40). Qhov siab dua cov ntsiab lus acrylonitrile, qhov zoo dua nws cov roj tsis kam, lub zog tensile, hardness thiab abrasion tsis kam, txhim kho dej tsis kam, thiab txo cov huab cua permeability. Yog li ntawd, nws solubility nyob rau hauv polar solvents tau nce, thiab nws cov corrosion kuj kuj tau cuam tshuam. Elasticity thiab txias kuj yuav deteriorate. Nitrile roj hmab tsis tiv taus flexing thiab muaj kua muag tsis zoo. Feem ntau, cov ntsiab lus acrylonitrile hauv nitrile roj hmab sealing nplhaib yog 26% ~ 50%.
Nitrile roj hmab muaj kev tiv thaiv zoo heev rau cov roj ntxhia, tsiaj thiab zaub rog, thiab aliphatic hydrocarbons, thiab yog siv dav hauv cov khoom siv uas tuaj yeem tiv nrog roj av thiab lwm yam roj. Nws yog resistant rau alkali thiab non-oxidizing dilute acid corrosion, tab sis tsis resistant rau oxidizing acids (xws li nitric acid, chromic acid, thiab lwm yam), muaj ntxhiab hydrocarbons, greases, ketones, ethers, halogenated hydrocarbons, thiab lwm yam.
1-2 Fluorine roj hmab FKM, fluorine roj hmab muaj qhov zoo ntawm qhov kub thiab txias tsis kam, roj tsis kam thiab tshuaj corrosion kuj. Nws tuaj yeem siv rau hauv cov concentrated sulfuric acid, nitric acid, phosphoric acid, caustic soda thiab lwm yam xov xwm. Txawm li cas los xij, raws li qhov kub thiab txias nce, nws cov corrosion kuj txo, thiab qhov siab tshaj plaws kev khiav hauj lwm kub yog 200 ° C.
1-3 Silicone roj hmab MVQ, silicone roj hmab muaj qhov kub thiab txias tsis kam, thiab kev nyab xeeb siv kub yog -70 ~ 200 ℃. Hauv dilute sulfuric acid, hydrochloric acid, acetic acid, caustic soda, ethanol, ntxhia roj thiab lwm yam xov xwm, tsis muaj qhov pom tseeb corrosion tshwm sim.
Silicone roj hmab yog ib hom polar polymer polymerized los ntawm dimethylsiloxane thiab lwm yam organic silicon monomers nyob rau hauv lub xub ntiag ntawm acidic los yog alkaline catalysts. Silicone roj hmab muaj cov thermal stability siab, tab sis nws muaj polarity thiab nws yooj yim rau ionic cracking nyob rau hauv qhov kev txiav txim ntawm acid thiab alkali, yog li nws muaj tsis zoo corrosion kuj. Tsis haum rau roj av kuab tshuaj (xws li benzene, toluene, thiab lwm yam), acetone, ketones, ethers thiab lwm yam organic solvents. Lub zog tensile thiab elongation ntawm silicone roj hmab yog me me.
1-4 Ethylene Propylene Rubber EPDM, Ethylene Propylene Rubber yog tsim los ntawm polymerization ntawm ethylene thiab propylene, muab faib ua binary thiab terpolymers. Nws yog tshwj xeeb yog resistant rau phosphate hydraulic roj, ketones, cawv daws, thiab acids thiab alkalis, thiab nyob rau tib lub sij hawm nws muaj peev xwm tiv taus high-pressure chav, thiab muaj zoo huab cua tsis kam thiab ozone kuj. Txawm li cas los xij, nws swells hauv cov roj ntxhia thiab cov roj ntsha roj ntsha, yog li nws tsis tuaj yeem siv rau hauv cov xov xwm no.
1-5 Lwm cov ntaub ntawv, lwm cov ntaub ntawv siv los ua cov ntsaws ruaj ruaj muaj xws li hlau, ntim PTFE, nthuav graphite (hloov graphite), asbestos thiab lwm yam ntaub ntawv
Thiab cov khoom siv roj hmab-yas sib xyaw. Cov ntaub ntawv no tsuas yog siv rau hauv cov ntawv thov kub.
Cim npe nrov: o rings, Tuam Tshoj, lwm tus neeg, manufacturers, hoobkas, customized, yuav, zoo, pricelist, quotation, luv nqi, ua nyob rau hauv Suav teb
