Ukumisa uwoyela wokugcoba ekuphumeni kanye nezinto zangaphandle ekungeneni, isembozo se-annular esenziwe ngengxenye eyodwa noma ngaphezulu siboshelwa endandeni eyodwa noma i-washer ye-bearing futhi ithintane nenye indandatho noma iwasha, okwenza igebe elincane elaziwa ngokuthi i-labyrinth. Amasongo erabha anesiphambano esiyindilinga enza indandatho yokuvala. Yaziwa njengendandatho yokuvala emise okuka-O ngenxa yesiphambano esimise okwe-O.

1. Indandatho yokuvala irabha ye-nitrile ye-NBR

Amanzi, uphethiloli, i-silicone grease, uwoyela we-silicone, uwoyela wokugcoba we-diester-based, uwoyela we-hydraulic osuselwe ku-petroleum, kanye neminye imidiya konke kungasetshenziswa nakho. Njengamanje, iwuphawu lwenjoloba olubiza kancane futhi oluvame ukusetshenziswa kakhulu. Akunconyelwe ukusetshenziswa nezincibilikisi ze-polar njenge-chloroform, i-nitrohydrocarbons, ama-ketone, i-ozone, ne-MEK. Izinga lokushisa elijwayelekile lokusebenza ngu -40 kuya ku-120 °C.

2. I-HNBR hydrogenated nitrile injoloba yokuvala indandatho

Inokumelana kahle ne-ozone, ukukhanya kwelanga, nesimo sezulu, futhi imelana kakhulu nokugqwala, ukuklebhuka, nokuwohloka kokucindezela. Ukuqina okukhulu uma kuqhathaniswa nerabha ye-nitrile. Ilungele ukuhlanza izinjini zezimoto namanye amagiya. Akwelulekwa ukuthi kusetshenziswe lokhu ngezixazululo ezinephunga elimnandi, utshwala, noma i-ester. Izinga lokushisa elijwayelekile lokusebenza ngu -40 kuya ku-150 °C.

3. Indandatho yokuvala irabha ye-silicone ye-SIL

Ukumelana okuhle kakhulu nokushisa, amakhaza, i-ozone, nokuguga komkhathi kunamandla. inezimfanelo ezinhle kakhulu zokuvikela. Ayimelani nowoyela, futhi amandla ayo aqinile aphansi kunawerabha evamile. Ilungele ukusetshenziswa nezifudumezi zamanzi zikagesi, ama-ayina kagesi, amahhavini ama-microwave, nezinye izinto zasendlini. Kuyafaneleka futhi ezintweni ezihlukahlukene, imithombo yokuphuza enjalo namaketela, ahlangana nesikhumba somuntu. Akukhuthazwa ukusebenzisa i-sodium hydroxide, amafutha, ama-acids agxilile, noma izincibilikisi eziningi kakhulu. Izinga lokushisa elijwayelekile lokusebenza ngu -55 ~ 250 °C.

4. I-VITON fluorine irabha yokuvala indandatho

Isimo sezulu sayo esingavamile, i-ozone, nokumelana namakhemikhali kuhambisana nokumelana kwayo nezinga lokushisa eliphakeme kakhulu; nokho, ukumelana kwayo okubandayo kuphansi. Iningi lamafutha nezinyibilikisi, ikakhulukazi ama-acids, ama-aliphatic kanye nama-aromatic hydrocarbons, kanye namafutha emifino nawezilwane, awakuthinti. Ilungele amasistimu kaphethiloli, izinsiza zamakhemikhali, nezidingo zokuvala injini ye-diesel. Ukusetshenziswa nama-ketones, ama-ester anesisindo samangqamuzana aphansi, nezingxube eziqukethe ama-nitrate akukhuthazwa. -20 kuya ku-250 °C izinga lokushisa elivamile lokusebenza.

5. Indandatho yokuvala irabha ye-FLS fluorosilicone

Ukusebenza kwayo kuhlanganisa izimfanelo ezinhle kakhulu ze-silicone nerabha ye-fluorine. Iphinde imelane kakhulu nezinyibilikisi, amafutha kaphethiloli, amazinga okushisa aphezulu naphansi, namafutha. ekwazi ukumelana nokuguguleka kwamakhemikhali ahlanganisa umoya-mpilo, izinyibilikisi eziqukethe ama-hydrocarbon anephunga elimnandi, nezinyibilikisi ezine-chlorine. -50~200 °C yizinga lokushisa elijwayelekile lokusebenza.

6. Indandatho yokuvala irabha ye-EPDM EPDM

Ayizweli emanzini, imelana namakhemikhali, imelana ne-ozone, futhi imelana nesimo sezulu. Isebenza kahle ekuvaleni izinhlelo ezifaka uphuzo oludakayo namaketone kanye nomhwamuko wamanzi onezinga lokushisa eliphezulu. Izinga lokushisa elijwayelekile lokusebenza ngu -55 kuya ku-150 °C.

7. CR neoprene sealing ring

Iyakwazi ukumelana nesimo sezulu ikakhulukazi nokukhanya kwelanga. Iyakwazi ukumelana nama-asidi ahlanjululwe kanye nezithambisi ze-silicone grease, futhi ayesabi iziqandisi ezifana ne-dichlorodifluoromethane ne-ammonia. Ngakolunye uhlangothi, iyanda kakhulu emafutheni amaminerali anamaphuzu aphansi e-aniline. Amazinga okushisa aphansi enza i-crystallization kanye nokuqina kube lula. Ifanele uhla lwezimo ezichayeka emkhathini, yilanga, ne-ozone kanye nohlu lwezixhumanisi zokuvala uphawu ezimelana nelangabi ngamakhemikhali. Sebenzisa nama-asidi aqinile, ama-nitrohydrocarbon, ama-ester, izinhlanganisela ze-ketone, ne-chloroform akwelulekwa. Izinga lokushisa elijwayelekile lokusebenza ngu -55 kuya ku-120 °C.

8. Indandatho yokuvala irabha ye-IIR butyl

Isebenza kahle kakhulu mayelana nokucinana komoya, ukumelana nokushisa, ukumelana ne-UV, ukumelana ne-ozone, kanye nokwahlukanisa; ngaphezu kwalokho, ingakwazi ukumelana nokuchayeka ezintweni ezixubene ne-oxidizable kanye namafutha ezilwane nemifino futhi inokumelana okuhle nezincibilikisi ze-polar ezihlanganisa utshwala, ama-ketones, nama-ester. Ilungele okokusebenza kwevacuum noma amakhemikhali. Akwelulekwa ukuthi isetshenziswe ngophalafini, ama-hydrocarbons anephunga elimnandi, noma izincibilikisi ze-petroleum. -50 kuya ku-110 °C izinga lokushisa elivamile lokusebenza.

9. ACM acrylic injoloba sealing ring

Ukumelana nesimo sezulu, ukumelana nowoyela, kanye nezinga lokuwohloka kokucindezela konke kungaphansi kwesilinganiso, nokho amandla ayo okusebenza, ukumelana namanzi, nokumelana nokushisa okuphezulu konke kuhle kakhulu. Ivamise ukutholakala kuma-power steering nama-gearbox systems ezimoto. Akunconyelwe ukusetshenziswa ne-brake fluid, amanzi ashisayo, noma i-phosphate esters. Izinga lokushisa elijwayelekile lokusebenza ngu-25 kuya ku-170 ° C.

10. I-NR yemvelo ye-rubber yokuvala indandatho

Izimpahla zenjoloba zinamandla ngokumelene nokuklebhuka, ukunwebeka, ukuguga, nokunwebeka. Nokho, iyaguga ngokushesha emoyeni, ibambelele lapho ishisiwe, inwebe kalula, incibilike kuwoyela wamaminerali noma uphethiloli, futhi imelane ne-asidi epholile kodwa hhayi i-alkali enamandla. Ifanele ukusetshenziswa oketshezini olunama-ion hydroxyl, i-ethanol enjalo noketshezi lwamabhuleki emoto. -20 kuya ku-100 °C yizinga lokushisa elijwayelekile lokusebenza.

11. Indandatho yokuvala irabha ye-PU polyurethane

Irabha ye-polyurethane inezimfanelo ezinhle kakhulu zemishini; idlula amanye ama-rubber mayelana nokumelana nokugqoka kanye nokumelana nokucindezela okuphezulu. Ukumelana kwayo nokuguga, i-ozone, namafutha nakho kuhle kakhulu; kodwa, emazingeni okushisa aphezulu, iyakwazi ukungena emanzini. Ngokujwayelekile isetshenziselwa ukuvala ukuxhumana okungamelana nokuguga nokucindezela okuphezulu. Izinga lokushisa elijwayelekile lokusebenza ngu -45 kuya ku-90 °C.