Ukuze kuthintelwe ukuvuza kweoyile yokuthambisa kunye nezinto zangaphandle ukuba zingangeni, isigqubuthelo esenziwe ngeyona nto okanye ngaphezulu sibotshelelwa kwiringi enye okanye iwasher yebheringi kwaye siqhagamshelane neringi okanye iwasher enye, okwenza umsantsa omncinci owaziwa ngokuba yi-labyrinth. Iiringi zerabha ezine-cross-section ezijikelezayo zenza i-sealing ring. Yaziwa njenge-sealing ring ene-o-shaped ngenxa ye-cross-section yayo ene-o-shaped.

1. Indandatho yokutywina yerabha ye-nitrile ye-NBR

Amanzi, ipetroli, igrisi yesilicone, ioyile yesilicone, ioyile yokuthambisa esekwe kwi-diester, ioyile ye-hydraulic esekwe kwi-petroleum, kunye nezinye izinto ezisetyenziswayo zingasetyenziswa nayo. Okwangoku, yeyona rhabaxa ibiza kancinci kwaye isetyenziswa kakhulu. Ayikhuthazwa ukuba isetyenziswe nezinyibilikisi ze-polar ezifana ne-chloroform, ii-nitrohydrocarbons, ii-ketones, i-ozone, kunye ne-MEK. Umgangatho wobushushu obuqhelekileyo bokusebenza yi--40 ukuya kwi-120 °C.

2. Indandatho yokutywina yerabha ye-nitrile ene-hydrogenated HNBR

Inokumelana okuhle ne-ozone, ilanga, kunye nemozulu, kwaye iyakwazi ukumelana nokugqwala, ukukrazuka, kunye nokuguqulwa koxinzelelo. Ihlala ixesha elide xa ithelekiswa nerabha ye-nitrile. Ilungele ukucoca iinjini zemoto kunye nezinye izixhobo. Akucetyiswa ukuba isebenzise oku kunye nezisombululo ze-aromatic, ii-alcohols, okanye ii-esters. Uluhlu lobushushu oluqhelekileyo lokusebenza yi--40 ukuya kwi-150 °C.

3. Indandatho yokutywina yerabha ye-SIL silicone

Iyakwazi ukumelana kakuhle nobushushu, ukubanda, i-ozone, kunye nokwaluphala emoyeni. Ineempawu ezintle kakhulu zokuthintela ubushushu. Ayikwazi ukumelana neoyile, kwaye amandla ayo okutsala aphantsi kuneerabha eziqhelekileyo. Ilungele ukusetyenziswa nezifudumezi zamanzi zombane, ii-ayini zombane, ii-oveni ze-microwave, kunye nezinye izixhobo zasekhaya. Ikwafanelekile kwizinto ezahlukeneyo, ezinje ngeemithombo zokusela kunye neeketile, ezidibana nolusu lomntu. Akucetyiswa ukuba kusetyenziswe i-sodium hydroxide, iioyile, ii-asidi ezixineneyo, okanye uninzi lwezinyibilikisi ezixineneyo. Uluhlu lobushushu bokusebenza okuqhelekileyo yi--55~250 °C.

4. Indandatho yokutywina irabha ye-fluorine ye-VITON

Imozulu yayo egqwesileyo, i-ozone, kunye nokumelana kwayo neekhemikhali kuhambelana nokumelana kwayo okuphezulu kobushushu; nangona kunjalo, ukumelana kwayo nokubanda akulunganga. Uninzi lweeoyile kunye nezinyibilikisi, ngakumbi ii-asidi, ii-aliphatic kunye nee-hydrocarbons ezinuka kamnandi, kunye neeoyile zemifuno nezezilwanyana, aziyichaphazeli. Ilungele iinkqubo zamafutha, izixhobo zeekhemikhali, kunye neemfuno zokutywinwa kweenjini zedizili. Ukusetyenziswa kunye nee-ketones, ii-esters ezinobunzima obuphantsi beemolekyuli, kunye nemixube equlethe i-nitrates akukhuthazwa. -20 ukuya kwi-250 °C luluhlu oluqhelekileyo lobushushu bokusebenza.

5. Indandatho yokutywina yerabha ye-FLS fluorosilicone

Ukusebenza kwayo kudibanisa iimpawu ezilungileyo ze-silicone kunye nerabha ye-fluorine. Ikwamelana kakhulu nezinyibilikisi, iioyile zepetroli, amaqondo obushushu aphezulu naphantsi, kunye neeoyile. Iyakwazi ukumelana nokukhukuliseka kweekhemikhali eziquka ioksijini, izinyibilikisi ezinee-hydrocarbons ezinuka kamnandi, kunye nezinyibilikisi ezine-chlorine. -50~200 °C luluhlu oluqhelekileyo lobushushu bokusebenza.

6. Indandatho yokutywina yerabha ye-EPDM EPDM

Ayinamanzi, ayisebenzisi iikhemikhali, ayisebenzisi i-ozone, kwaye ayisebenzisi imozulu. Isebenza kakuhle ekuvaleni izinto eziquka i-alcohols kunye nee-ketones kunye nomphunga wamanzi obushushu obuphezulu. Umgangatho wobushushu obuqhelekileyo bokusebenza yi--55 ukuya kwi-150 °C.

7. Indandatho yokutywina ye-CR neoprene

Iyakwazi ukumelana nemozulu kunye nelanga. Ayinazo ii-asidi ezixutyiweyo kunye nee-silicone grease lubricants, kwaye ayoyiki ii-refrigerants ezifana ne-dichlorodifluoromethane kunye ne-ammonia. Kwelinye icala, ikhula kakhulu kwiioyile zeminerali ezinamachaphaza aphantsi e-aniline. Amaqondo obushushu aphantsi enza ukuba i-crystallization kunye nokuqina kube lula. Ifanelekile kwiimeko ezahlukeneyo zomoya, ilanga, kunye ne-ozone-exposed kunye noluhlu lweendawo zokubopha ezichasene neekhemikhali kunye nomlilo. Ukusetyenziswa kunye nee-asidi ezinamandla, ii-nitrohydrocarbons, ii-esters, ii-ketone compounds, kunye ne-chloroform akukhuthazwa. Uluhlu lobushushu oluqhelekileyo lokusebenza yi--55 ukuya kwi-120 °C.

8. Indandatho yokutywina irabha ye-butyl ye-IIR

Isebenza kakuhle kakhulu ngokubhekiselele ekuqineni komoya, ukumelana nobushushu, ukumelana ne-UV, ukumelana ne-ozone, kunye nokuthintela ukufudumeza; ukongeza, inokumelana nezinto ezinokutshiswa kunye neeoyile zezilwanyana nezemifuno kwaye inokumelana kakuhle nezinyibilikisi ze-polar kubandakanya ii-alcohols, ii-ketones, kunye nee-esters. Ifanelekile kwizixhobo zokumelana ne-vacuum okanye iikhemikhali. Akucetyiswa ukuba uyisebenzise ne-kerosene, ii-hydrocarbons ezinuka kamnandi, okanye izinyibilikisi zepetroleum. -50 ukuya kwi-110 °C luluhlu oluqhelekileyo lobushushu bokusebenza.

9. Indandatho yokutywina irabha ye-acrylic ye-ACM

Ukumelana kwayo nemozulu, ukumelana neoyile, kunye nesantya sokuguquguquka koxinzelelo zonke zingaphantsi komndilili, nangona kunjalo amandla ayo oomatshini, ukumelana namanzi, kunye nokumelana nobushushu obuphezulu zonke zilungile kakhulu. Zifumaneka kwiinkqubo zokuqhuba ngamandla kunye neebhokisi zeemoto. Akukhuthazwa ukuba zisetyenziswe kunye nolwelo lweebhuleki, amanzi ashushu, okanye ii-phosphate esters. Uluhlu lobushushu oluqhelekileyo lokusebenza yi--25 ukuya kwi-170 °C.

10. Indandatho yokutywina yerabha yendalo ye-NR

Izinto zerabha ziqinile ekukrazukeni, ekunyukeni, ekugugeni, nasekuthambekeni. Nangona kunjalo, iyaguga ngokukhawuleza emoyeni, inamathela xa ishushu, yanda ngokukhawuleza, inyibilike kwioyile yeminerali okanye kwipetroli, kwaye imelana ne-asidi ethambileyo kodwa ingabi yi-alkali enamandla. Ifanelekile ukusetyenziswa kulwelo olunee-hydroxyl ions, ezifana ne-ethanol kunye nolwelo lweebhuleki zemoto. -20 ukuya kwi-100 °C luluhlu oluqhelekileyo lobushushu bokusebenza.

11. Indandatho yokutywina yerabha ye-PU polyurethane

Irabha yepolyurethane ineempawu ezibalaseleyo zoomatshini; iphumelela kakhulu kunezinye irabha ngokubhekiselele ekugugeni nasekuxhathiseni uxinzelelo oluphezulu. Ukuxhathisa kwayo ukwaluphala, i-ozone, kunye neoyile nako kukwalungile kakhulu; kodwa, kumaqondo obushushu aphezulu, ichaphazeleka yi-hydrolysis. Ihlala isetyenziselwa ukuvala iintambo ezinokumelana nokugugiswa kunye noxinzelelo oluphezulu. Uluhlu lobushushu oluqhelekileyo lokusebenza yi--45 ukuya kwi-90 °C.