Yuav kom tiv thaiv cov roj lubricating kom tsis txhob xau thiab cov khoom txawv teb chaws tsis txhob nkag mus, lub hau annular ua los ntawm ib lossis ntau yam khoom raug khi rau ntawm ib lub nplhaib lossis lub washer ntawm lub bearing thiab kov lwm lub nplhaib lossis lub washer, tsim ib qho me me hu ua labyrinth. Cov nplhaib roj hmab nrog lub voj voog ua lub nplhaib sealing. Nws hu ua O-shaped sealing ring vim nws O-shaped cross-section.

1. NBR nitrile roj hmab sealing nplhaib

Dej, roj av, roj silicone, roj silicone, roj diester-based lubricating, roj petroleum-based hydraulic, thiab lwm yam khoom siv tau nrog nws. Tam sim no, nws yog qhov pheej yig tshaj plaws thiab feem ntau siv roj hmab foob. Tsis pom zoo kom siv nrog cov kuab tshuaj polar xws li chloroform, nitrohydrocarbons, ketones, ozone, thiab MEK. Qhov kub thiab txias rau kev ua haujlwm yog -40 txog 120 °C.

2. HNBR hydrogenated nitrile roj hmab sealing nplhaib

Nws muaj kev tiv taus zoo rau ozone, tshav ntuj, thiab huab cua, thiab nws tiv taus kev xeb, tawg, thiab kev hloov pauv ntawm qhov compression. Muaj zog dua piv rau roj hmab nitrile. Zoo tagnrho rau kev ntxuav lub cav tsheb thiab lwm yam khoom siv. Nws tsis raug qhia kom siv qhov no nrog cov tshuaj tsw qab, cawv, lossis esters. Qhov kub thiab txias rau kev ua haujlwm yog -40 txog 150 ° C.

3. SIL silicone roj hmab sealing nplhaib

Nws muaj kev tiv taus kub, txias, ozone, thiab huab cua laus zoo heev. Nws muaj cov yam ntxwv zoo heev rau kev rwb thaiv tsev. Nws tsis tiv taus roj, thiab nws lub zog tensile qis dua li roj hmab ib txwm muaj. Zoo tagnrho rau kev siv nrog cov cua sov dej hluav taws xob, cov hlau hluav taws xob, lub qhov cub microwave, thiab lwm yam khoom siv hauv tsev. Nws kuj tsim nyog rau ntau yam khoom, xws li cov dej haus thiab cov lauj kaub, uas kov tau daim tawv nqaij tib neeg. Nws tsis pom zoo kom siv sodium hydroxide, roj, cov kua qaub concentrated, lossis feem ntau cov kuab tshuaj concentrated. Qhov kub thiab txias rau kev ua haujlwm ib txwm yog -55 ~ 250 ° C.

4. VITON fluorine roj hmab sealing nplhaib

Nws qhov kev tiv taus huab cua zoo tshaj plaws, ozone, thiab tshuaj lom neeg yog sib phim los ntawm nws qhov kev tiv taus kub siab heev; txawm li cas los xij, nws qhov kev tiv taus txias yog subpar. Feem ntau ntawm cov roj thiab cov kuab tshuaj, tshwj xeeb tshaj yog cov kua qaub, aliphatic thiab aromatic hydrocarbons, nrog rau cov roj zaub thiab tsiaj, tsis cuam tshuam rau nws. Zoo tagnrho rau cov roj systems, cov chaw tshuaj lom neeg, thiab cov kev xav tau sealing cav diesel. Siv nrog ketones, cov esters qis molecular hnyav, thiab cov khoom sib xyaw uas muaj nitrates tsis raug qhia. -20 txog 250 ° C yog qhov kub ua haujlwm ib txwm muaj.

5. FLS fluorosilicone roj hmab sealing nplhaib

Nws cov kev ua tau zoo muab cov yam ntxwv zoo tshaj plaws ntawm silicone thiab fluorine roj hmab. Nws kuj tseem tiv taus cov kuab tshuaj, roj roj, kub siab thiab qis, thiab roj. Muaj peev xwm tiv taus kev yaig ntawm cov tshuaj xws li oxygen, cov kuab tshuaj uas muaj cov hydrocarbons aromatic, thiab cov kuab tshuaj uas muaj chlorine. -50 ~ 200 ° C yog qhov kub ua haujlwm ib txwm muaj.

6. EPDM EPDM roj hmab sealing nplhaib

Nws tiv taus dej, tiv taus tshuaj lom neeg, tiv taus ozone, thiab tiv taus huab cua. Nws ua haujlwm zoo rau kev siv sealing uas muaj cawv thiab ketones nrog rau cov pa dej kub siab. Qhov kub thiab txias rau kev ua haujlwm yog -55 txog 150 °C.

7. CR neoprene sealing nplhaib

Nws yog qhov tshwj xeeb tshaj yog resilient rau huab cua thiab lub hnub ci. Nws yog resistant rau diluted acids thiab silicone grease lubricants, thiab nws tsis ntshai refrigerants xws li dichlorodifluoromethane thiab ammonia. Ntawm qhov tod tes, nws expands tseem ceeb nyob rau hauv cov roj minerals nrog qis aniline ntsiab lus. Qis kub ua rau crystallization thiab hardening yooj yim. Nws yog tsim nyog rau ntau yam atmospheric, hnub ci, thiab ozone-raug mob nrog rau ntau yam tshuaj lom neeg thiab nplaim taws-resistant sealing txuas. Siv nrog muaj zog acids, nitrohydrocarbons, esters, ketone compounds, thiab chloroform tsis pom zoo. Lub txheem kub ntau yam rau kev ua haujlwm yog -55 txog 120 ° C.

8. IIR butyl roj hmab sealing nplhaib

Nws ua tau zoo tshwj xeeb hauv kev nruj ntawm huab cua, tiv taus cua sov, tiv taus UV, tiv taus ozone, thiab rwb thaiv tsev; ntxiv rau, nws tuaj yeem tiv taus kev raug rau cov khoom siv oxidizable thiab cov roj tsiaj thiab zaub thiab muaj kev tiv taus zoo rau cov kuab tshuaj polar suav nrog cawv, ketones, thiab esters. Haum rau cov khoom siv nqus tsev lossis tshuaj lom neeg. Nws tsis raug qhia kom siv nws nrog kerosene, aromatic hydrocarbons, lossis cov kuab tshuaj roj av. -50 txog 110 ° C yog qhov kub ua haujlwm ib txwm muaj.

9. ACM acrylic roj hmab sealing nplhaib

Nws qhov kev tiv taus huab cua, kev tiv taus roj, thiab qhov nrawm ntawm kev hloov pauv yog qis dua qhov nruab nrab, txawm li cas los xij nws lub zog kho tshuab, kev tiv taus dej, thiab kev tiv taus kub siab yog qhov zoo heev. Feem ntau pom muaj nyob rau hauv lub kauj tsheb fais fab thiab lub thawv iav ntawm lub tsheb. Tsis pom zoo kom siv nrog cov kua nres, dej kub, lossis phosphate esters. Qhov kub thiab txias rau kev ua haujlwm yog -25 txog 170 ° C.

10. NR roj hmab ntuj sealing nplhaib

Cov khoom siv roj hmab muaj zog tiv taus kev rhuav, kev ntev, kev hnav, thiab kev ywj pheej. Txawm li cas los xij, nws laus sai sai hauv huab cua, lo thaum cua sov, nthuav dav yooj yim, yaj hauv cov roj av lossis roj av, thiab tiv taus cov kua qaub me me tab sis tsis yog alkali muaj zog. Haum rau kev siv hauv cov kua uas muaj hydroxyl ions, xws li ethanol thiab cov kua nres tsheb. -20 txog 100 ° C yog qhov kub ua haujlwm ib txwm muaj.

11. PU polyurethane roj hmab sealing nplhaib

Cov roj hmab polyurethane muaj cov yam ntxwv zoo heev; nws ua tau zoo dua lwm cov roj hmab hauv kev tiv taus kev hnav thiab kev kub siab. Nws kuj tiv taus kev laus, ozone, thiab roj kuj zoo heev; tab sis, thaum kub siab, nws yooj yim rau hydrolysis. Feem ntau siv rau kev sib txuas uas tuaj yeem tiv taus kev hnav thiab kev kub siab. Qhov kub ib txwm rau kev ua haujlwm yog -45 txog 90 ° C.