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hydraulic oil seal types

Hydraulic oil seals are mainly rubber parts used in hydraulic equipment to prevent internal oil leakage and external dust from entering.

UN oil seal

UN is the most commonly used hydraulic oil seal. It is mainly used in various hydraulic equipment at -20-80℃. The main material is polyurethane. There are more than 2,000 UN models, usually blue.

UN oil seal size chart

4*10*4 50*58*10 150*170*15
5*12*6 50*60*6 150*170*16
5*12*8 50*60*7 150*175*15
6*12*4 50*60*7.5 150*180*12
6*12*5 50*60*8 150*180*15
6*12*6 50*60*10 150*180*18
8*12*5 50*60*12 155*170*9
8*14*4 50*62*6 155*175*9
8*14*6 50*62*10 155*180*15
8*14*8 50*62*12 160*170*10
8*16*4 50*62*6 160*170*12
8*16*6 50*63*6 160*170*11.5
8*18*8 50*63*8 160*175*9
8*18*10 50*63*10 160*175*12
8*22*10 50*63*12 160*175*15
9.6*15.7*3 50*65*6 160*175*16
10*16*4 50*65*8 160*180*10
10*16*4.5 50*65*9 160*180*12
10*16*6 50*65*10 160*180*14
10*16*8 50*65*12 160*180*15
10*18*5 50*68*10 160*180*16
10*18*6 50*70*8 160*180*18
10*18*8 50*70*10 160*183*15
10*19*6 50*72*12 160*185*12
10*20*5 50*70*12 160*185*16
10*20*6 50*75*12 160*185*18
10*20*7 52*62*12 160*190*15
10*20*8 53*60*7 165*180*9
10*22*6 53*63*5 165*180*15
10*22*8 53*63*6 165*185*15
11*18*6 53*63*6.5 165*190*15
11*20*8 53*63*8 165*190*19
11.2*19.2*5 53*63*7 170*180*10
12*18*5 53*63*10 170*180*11.5
12*18*6 53*63*12 170*180*12
12*18*8 53*65*8 170*185*9
12*19*5 53*70*10 170*190*9
12*20*5 53*73*12 170*190*12
12*20*6 55*63*6 170*190*15
12*20*8 55*63*8 170*195*12
12*22*5 55*63*10 170*195*15
12*22*6 55*65*5 170*195*16
12*22*7 55*65*6 170*200*12
12*22*8 55*65*7 170*200*15
12*24*6 55*65*8 170*200*18
12*24*8 55*65*9 175*185*11.5
12*25*8 55*65*10 175*190*9
12*25*10 55*65*12 175*195*15
12.5*20.5*5 55*68*10 175*200*15
14*20*5 55*70*8 175*200*16
14*20*6 55*70*9 175*205*15
14*20*8 55*70*10 180*190*10
14*22*4 55*70*12 180*190*12
14*22*5 55*71*12 180*192*12.5
14*22*6 55*72*10 180*200*10
14*22*8 55*75*10 180*200*12
14*24*5 55*75*12 180*200*14
14*24*8 55*80*12 180*200*15
14*25*8 56*66*6 180*200*16
14*26*5 56*66*10 180*205*12
14*28*8 56*76*12 180*205*15
14*28*10 57*70*10 180*205*16
15*22*5 58*68*6 180*205*18
15*22*6 60*68*8 180*210*15
15*22*8 60*70*5 180*210*22
15*23*5 60*70*6 180*215*15
15*25*5 60*70*7 180*220*16
15*25*6 60*70*8 185*195*12
15*25*7 60*70*10 185*200*9
15*25*8 60*70*12 185*200*10
15*27*6 60*71*7 185*200*12
15*30*6 60*72*9 185*200*15
15*30*8 60*72*10 185*205*15
15*30*10 185*210*15
16*21*7 60*73*8 185*210*16
16*22*4 60*73*10 185*215*15
16*22*5 60*75*8 190*210*9
16*22*6 60*75*9 190*205*15
16*22*7 60*75*10 190*205*16
16*22*8 60*75*12 190*210*12
16*24*4 60*76*10 190*210*15
16*24*5 60*76*12 190*210*16
16*24*6 60*80*8 190*215*12
16*24*7 60*80*10 190*215*15
16*24*8 60*80*12 190*215*16
16*25*5 60*80*18 190*220*15
16*26*5 60*85*10 190*220*16
16*26*6 60*85*12 190*220*22
16*26*7 60*90*12 195*205*11.5
16*26*8 60*90*15 195*215*12
16*28*6 60*90*16 195*220*15
16*28*8 61*71*7 195*220*16
17*28*7 61*71*6 200*215*12
18*24*5 62*70*10 200*220*12
18*24*6 62*72*10 200*220*15
18*24*8 62*75*10 200*220*16
18*25*5 62*75*12 200*220*18
18*25*5.5 62*80*10 200*225*15
18*26*5 62*82*10 200*225*16
18*26*6 62*82*12 200*225*20
18*26*7 63*73*5 200*230*15
18*26*8 63*73*6 200*230*18
18*28*5 63*73*8 200*235*20
18*28*6 63*73*10 205*230*20
18*28*8 63*73*12 205*230*23
18*30*6 63*75*6 210*225*15
18*30*8 63*75*10 210*230*12
18*32*7 63*75*12 210*230*15
18*34*8 63*78*10 210*235*15
19*26*5 63*78*12 210*235*18
20*26*3.3 63*80*10 210*240*15
20*26*5 63*80*12 210*240*18
20*26*6 63*83*10 215*240*15
20*28*5 63*83*12 215*240*16
20*28*6 63*85*10 215*240*18
20*28*7 64*74*6 220*240*12
20*28*8 64*80*8 220*240*15
20*30*5 64*80*8.5 220*240*16
20*30*6 64*80*13 220*245*18
20*30*7 65*73*8 220*250*15
20*30*8 65*75*6 220*250*18
20*30*10 65*75*7 220*250*22
20*32*6 65*75*8 225*240*12
20*32*8 65*75*9 225*250*12
20*32*10 65*75*10 225*250*19
20*33*8 65*75*12 230*250*12
20*33*10 65*79*10 230*250*15
20*34*12 65*80*9 230*250*16
20*35*6 65*80*10 230*250*18
20*35*7 65*80*11 230*255*18
20*35*8 65*80*12 230*260*18
20*35*10 65*85*10 230*260*22
20*35*12 65*85*12 235*255*12
20*36*8 65*90*10 235*260*19
20*38*10 65*90*12 240*260*12
20*40*10 67*77*6 240*260*16
20*40*12 68*80*8.5 240*265*16
22*26*6 67*77*12 240*265*18
22*28*6 68*80*10 240*270*18
22*28*7 67*87*12 250*270*12
22*28*8 70*78*8 250*270*15
22*30*5 70*78*10 250*270*18
22*30*6 70*80*4.25 250*274*18
22*30*7 70*80*5 250*275*18
22*30*8 70*80*6 250*275*19
22*32*5 70*80*7 250*280*18
22*32*6 70*80*8 250*280*19
22*32*8 70*80*9 250*280*25
22*32*10 70*80*10 260*280*15
22*34*10 70*80*11.8 260*280*18
22*35*6 70*80*12 260*290*18
22*35*7 70*82*10 265*295*19
22*35*8 70*82*12 270*290*12
22*35*10 70*83*10 275*300*16
22*38*8 70*83*13 275*300*18
22*40*10 70*84*7 280*300*15
22.4*30*5 70*84*10 280*300*16
22.4*32.4*8 70*85*6 280*300*18
23.5*31.5*5 70*85*8 280*310*20
24*32*5 70*85*9 280*320*20
24*32*6 70*85*10 290*320*18
24*32*7 70*85*12 290*315*16
24*34*5 70*90*10 295*325*20
24*34*6 70*90*12 300*330*18
24*34*7 70*90*15 300*330*19
24*36*6 70*95*12 310*340*22
24*36*8 71*80*6 320*350*22
25*30*4 71*91*12 330*350*15
25*30*5 72*82*6 330*360*22
25*32*4 73*85*10 340*370*22
25*32*5 75*83*8 350*380*22
25*32*6 75*85*6 355*385*22
25*32*7 75*85*8 360*390*22
25*32*8 75*85*10 370*400*22
25*33*5 75*85*12 370*400*18
25*33*6 75*90*9 380*410*22
25*33*7 75*90*10 400*436*25
25*33*8 75*90*12 378*400*17
25*33*10 75*95*8 8*15*8
25*35*5 75*95*9 8*15*8
25*35*6 75*95*10 12*22.5*8
25*35*7 75*95*12 14*20*4
25*35*8 75*95*13 17*25*10
25*35*10 75*100*12 18*28*7.3
25*36*6 75*100*15 19*25*7
25*38*8 78*88*8 20*28*5.7
25*38*10 80*88*8 20*30*7.3
25*40*6 80*90*6 22*30*5.8
25*40*7 80*90*7 22*32*7
25*40*8 80*90*8 22*32*7.3
25*40*10 80*90*9 25*31*5
25*42*8 80*90*10 25*33*5.8
25*43*6 80*90*12 25*38*5
25*45*10 80*94*10 28*36*5.8
25*50*10 80*95*9 28*38*7.3
26*32*4.7 80*95*10 28*40*5
26*36*8 80*95*12 28*43*16
26*36*10 80*100*9 30*42*6
27*35*5 80*100*10 32*40*5.8
28*34*5 80*100*12 32*42*7.3
28*35*5 80*100*13 32*49*20
28*35*6 80*100*15 35*45*7.3
28*35.5*5 80*105*10 35*55*8
28*36*5 80*105*12 38*48*8
28*36*6 80*110*12 38*55*7
28*36*7 80*110*15 38*55*8
28*36*8 80*120*12 40*48*5.8
28*38*6 85*95*6 40*55*20
28*38*7 85*95*8 40*60*7
28*38*8 85*95*8.5 40*60*8
28*38*10 85*95*9 45*52*6
28*40*8 85*93*9 45*52*7
28*40*10 85*95*10 45*52*10
28*43*10 85*95*12 45*55*5.8
28*44*8 85*100*6 45*60*10.3
30*36*8 85*95*11.5 45*65*8
30*37*6 85*100*9 45*65*9
30*38*6 85*100*10 45*80*12
30*38*7 85*100*12 48*63*9
30*38*8 85*105*12 48*63*12
30*40*5 85*105*15 50*58*4.6
30*40*6 86*98*10 50*60*7.3
30*40*7 85*110*12 50*60*9
30*40*8 87*97*12 50*63*9
30*40*10 88*100*12 52*68*10
30*40*12 90*100*6 53*65*10
30*42*7 90*100*8 53*78*9
30*42*8 90*100*9 54*64*6
30*42*10 90*100*10 55*63*7
30*43*10 90*100*12 55*68*8
30*45*6 90*100*14 55*80*10
30*45*7 90*105*9 55*80*12.5
30*45*8 90*105*10 55*80*14.5
30*45*10 90*105*12 56*66*8
30*46*10 90*105*11.5 56*71*9
30*47*10 90*110*9 58*68*8
30*48*10 90*110*10 58*70*6
30*50*8 90*110*12 58*80*12
30*50*10 90*110*13 60*68*6
30*50*12 90*110*15 60*68*10
30*52*10 90*115*12 60*68*13.5
30*55*10 90*115*15 60*70*9
31.5*41.5*6 90*120*12 63*83*14
31.5*46.5*10 95*105*9 65*80*8
32*38*6 95*105*10 68*88*8
32*38*8 95*105*11 69*80*6
32*40*5 95*105*12 70*85*11
32*40*5.5 95*110*9 70*90*8
32*40*6 95*110*10 70*90*9
32*40*8 95*110*12 70*90*14
32*40*10 95*115*12 70*95*10
32*42*6 95*115*15 71*81*5.8
32*42*7 95*120*12 71*81*9
32*42*8 95*120*15 71*81*12
32*42*10 98*112*9 75*85*9
32*43*6 100*108*11.5 75*95*15
32*45*6 100*110*5 78*88*13.5
32*45*8 100*110*12 80*88*10
32*45*10 100*110*6 80*90*14
32*46*10 100*110*8 80*94*11.4
32*47*8 100*110*9 80*95*8
32*47*10 100*110*10 80*95*11
32*48*8 100*112*9 80*100*8
32*48*10 100*110*14 80*100*14
32*50*10 100*110*15 84*100*13
35*41*5 100*112*10 85*105*10
35*42*10 100*115*9 85*110*10
35*43*5 100*115*10 87*96*5.1
35*43*6 100*115*12 90*100*13
35*43*7 100*115*15 90*102*10
35*43*8 100*120*10 90*102*12
35*43*10 100*120*12 90*110*14
35*43*5.7 100*120*15 90*110*16
35*45*6 100*125*10 95*125*15
35*45*7 100*125*12 97*105*13.5
35*45*8 100*125*15 100*108*8
35*45*10 100*130*15 100*108*9
35*47*7 105*113*8 100*108*12
35*47*6 105*115*7 100*115*8
35*48*7 105*115*9 100*120*9
35*48*8 105*115*12 100*120*14
35*48*10 105*120*8 100*125*18
35*50*6 105*120*9 105*115*8
35*50*8 105*120*12 105*130*10
35*50*9 105*120*15 105*130*15
35*50*10 105*125*10 108*115*12
35*50*12 105*125*12 110*120*5.8
35*51*10 105*125*13 110*122*9
35*52*8 105*125*15 110*135*18
35*52*10 105*125*16 110*140*17
35*55*10 105*130*12 112*122*12
35*55*12 106*120*8.5 115*140*18
35*60*12 106*126*15 118*125*13.5
35.5*45*6 110*120*8 120*130*9
35.5*50.5*10 110*120*10 120*134*10
36*46*6 110*120*9 120*150*18
36*46*7 110*120*12 121*135*9
36*46*10 110*120*14 130*140*5.8
36*48*8 110*125*9 130*140*9
36*51*10 110*125*10 130*160*12
37*58*10 110*125*12 135*145*12
36*48*10 110*125*15 135*160*19
37*55*10 110*125*16 140*155*12
38*45*5 110*130*9 143*151*13.5
38*45*6.5 110*130*10 145*160*10
38*46*6 110*130*12 160*175*10
38*46*6.5 110*130*15 160*185*15
38*48*6 110*130*14.5 171*179*13.5
38*48*10 110*130*16 175*190*10
38*50*6 110*140*15 175*200*18
38*50*8 112*125*9 180*200*17
38*50*9 112*132*15 195*220*19
38*50*10 112*132*16 200*220*10
38*50*12 115*125*10 200*225*18
38*52*10 115*125*12 200*225*19
38*52*8 115*130*9 200*230*22
38*55*10 115*130*10 205*225*15
38*58*10 115*130*12 212*237*19
38*60*10 115*130*15 220*250*17
38*62*12 115*132*15 225*245*12
40*48*5 115*133*15 225*245*15
40*48*6 115*135*12 225*250*18
40*48*8 115*135*15 235*255*18
40*48*10 115*140*12 235*260*16
40*50*4 115*140*15 240*280*15
40*50*5 117*130*10 255*280*19
40*50*6 117*130*12 260*280*12
40*50*7 118*130*12 260*280*14
40*50*8 118*132*9 260*300*20
40*50*9 118*138*15 270*290*15
40*50*10 118*130*10 270*295*15
40*52*8 118*138*16 270*295*19
40*52*10 118*132*12 270*300*19
40*53*8 120*130*8 275*295*15
40*55*6.5 120*130*11.5 280*310*18
40*55*7 120*130*12 290*320*20
40*55*7.2 120*135*9 320*350*20
40*55*8 120*135*12 320*360*28
40*55*9 120*135*15 330*360*20
40*55*10 120*140*10 360*400*15
40*56*6 120*140*12 360*400*20
40*56*10 120*140*15 380*400*15
40*60*10 120*140*16 390*420*22
40*60*12 120*150*15 400*430*22
40*62*10 125*140*9 450*490*25
40*62*12 125*135*10 450*490*30
40*65*10 125*140*10  
40*65*12 125*140*11  
42*50*6 125*135*12  
42*50*8 125*140*12  
42*52*6 125*140*15  
42*52*8 125*145*12  
42*52*10 125*145*15  
42*55*7 125*145*16  
42*55*8 125*150*15  
42*55*10 125*155*15  
42*62*12 130*140*12  
43*65*10 130*145*9  
44*54*6 130*145*12  
45*52*8 130*145*15  
45*53*6 130*150*12  
45*53*8 130*150*15  
45*53*10 130*150*16  
45*55*5 130*160*15  
45*55*6 130*165*15  
45*55*7 133*143*11.5  
45*55*7.2 132*150*15  
45*55*7.3 135*150*9  
45*55*8 135*145*10  
45*55*9 135*145*11.5  
45*55*10 135*150*10  
45*56*7 135*150*12  
45*57*6 135*155*12  
45*56*10 135*155*15  
45*58*6 135*160*15  
45*58*10 136*150*9  
45*60*7 140*150*10  
45*60*8 140*150*10.5  
45*60*9 140*150*11  
45*60*10 140*150*12  
45*60*12 140*155*9  
45*62*10 140*155*10  
45*63*8 140*155*15  
45*63*10 140*155*16  
45*63*12 140*160*12  
45*65*10 140*160*15  
45*65*12 140*160*16  
45*70*12 140*170*15  
45*70*16 145*155*11.5  
47*57*8 145*160*9  
48*58*6 145*160*12  
48*58*8 145*160*15  
48*58*10 145*165*15  
48*60*8 145*170*15  
48*63*10 150*160*10  
48*63*10.2 150*165*9  
50*57*10 150*160*12  
50*58*6 150*162*12.5  
50*58*8 150*170*10  
  150*170*12  

UHS oil seal

UHS, like UN, is actually a universal size, but because of different standards, different products have appeared, mainly in different colors and names.

UR oil seal

UR is similar to UN. The only difference is that UR has a double-lip structure and UN has a single-lip structure. Usually the UN oil seal is blue and the UR oil seal is green.

JA dustproof oil seal

JA dust-proof oil seal is made of polyurethane material. Because its main function is to prevent dust, it has an extra dust-proof lip.

JA dustproof oil seal  size chart

18 * 28 * 5/9 90 * 102 * 7/11
20 * 30 * 5/9 100 * 112 * 7/11
22 * 32 * 5/9 105 * 117 * 8/12
25 * 35 * 5/9  
28 * 38 * 5/9 110 * 124 * 8/12
30 * 40 * 6/10 120 * 134 * 8/12
32 * 42 * 6/10 125 * 139 * 8/12
35 * 45 * 6/10 130 * 144 * 9/14
40 * 50 * 6/10 135 * 149 * 9/14
45 * 55 * 6/10 140 * 158 * 9/14
50 * 60 * 6/10 145 * 163 * 9/14
55 * 67 * 7/11 175 * 193 * 9/14
60 * 72 * 7/11 185 * 203 * 9/14
63 * 75 * 7/11 198 * 213 * 9/14
65 * 77 * 7/11 200 * 218 * 9/14
70 * 82 * 7/11 215 * 233 * 9/14
75 * 87 * 7/11 220 * 238 * 9/14
80 * 92 * 7/11 225 * 243 * 9/14
85 * 97 * 7/11 230 * 248 * 9/14
165 * 183 * 9/14 240 * 258 * 9/14
170 * 188 * 9/14 250 * 268 * 9/14
300 * 318 * 9/14  260 * 278 * 9/14
320 * 338 * 9/14  
   

SPGW oil seal

SPGW can be used in piston equipment with larger gaps and has good wear resistance and is more resistant to dirt.

SPGW oil seal size chart

MCGT-50*36*8.5 MCGT-115*100*12
MCGT-60*46*8.5 MCGT-115*100*12.5
MCGT-63*48*10.5 MCGT-120*105*12
MCGT-65*50*10.5 MCGT-120*100*15.5
MCGT-70*55*10.5 MCGT-125*102*15.5
MCGT-75*60*10.5 MCGT-130*107*15.5
MCGT-80*65*10.5 MCGT-135*112*15.5
MCGT-80*65*11 MCGT-140*114*15.5
MCGT-80*65*11.5 MCGT-140*117*15.5
MCGT-85*70*10.5 MCGT-145*122*15.5
MCGT-90*75*10.5 MCGT-150*127*15.5
MCGT-90*75*11 MCGT-155*132*15.5
MCGT-90*75*11.5 MCGT-160*137*15.5
MCGT-95*80*10.5 MCGT-165*142*15.5
MCGT-100*85*12 MCGT-170*147*15.5
MCGT-105*90*12 MCGT-175*152*15.5
MCGT-110*95*12 MCGT-180*157*15.5
MCGT-185*162*15.5  

KDAS oil seal

The design of KDAS hydraulic oil seal allows the piston parts to have good sealing performance under both stationary and moving conditions.

KDAS oil seal size chart

KDAS 20-11-17.7 KDAS-60-44-31.1 KDAS-100-80-37.7
KDAS-22-13-17.7 KDAS-60-48-28.9 KDAS-100-82-29.7
KDAS-25-15-20.5 KDAS-63-47-31.1 KDAS-100-86-32.9
KDAS-25-16-17.7 KDAS-63-51-28.9 KDAS-105-80-35.1
KDAS-28-19-17.7 KDAS-65-49-26.7 KDAS-110-85-35.1
KDAS-30-21-17.7 KDAS-65-50-31.1 KDAS-110-92-29.7
KDAS-32-22-29.1 KDAS-70-50-35.1 KDAS-110-96-32.9
KDAS-32-24-21.9 KDAS-70-54-26.7 KDAS-115-90-35.1
KDAS-35-25-29.1 KDAS-70-58-28.9 KDAS-115-97-29.7
KDAS-40-24-31.1 KDAS-75-55-35.1 KDAS-120-106-32.9
KDAS-40-26-20.7 KDAS-75-59-26.7 KDAS-120-95-35.1
KDAS-40-30-29.1 KDAS-80-60-35.1 KDAS-125-100-38.1
KDAS-42-28-20.7 KDAS-80-62-29.7 KDAS-125-103-36.7
KDAS-45-29-31.1 KDAS-80-66-32.9 KDAS-125-108-40.9
KDAS-45-31-20.7 KDAS-85-65-35.1 KDAS-130-105-44.4
KDAS-45-35-29.1 KDAS-90-70-35.1 KDAS-135-110-44.4
KDAS-50-34-31.1 KDAS-90-72-29.7 KDAS-140-115-44.4
KDAS-50-38-28.9 KDAS-90-76-32.9 KDAS-140-118-36.7
KDAS-55-39-31.1 KDAS-95-75-35.1 KDAS-140-123-40.9
KDAS-56-40-26.7 KDAS-100-75-35.1 KDAS-145-120-44.4

IDI oil seal

IDI hydraulic oil seals, usually made of yellow polyurethane, have a larger cross-section and can withstand more pressure, so they are used more in construction machinery and have better wear and pressure resistance.

IDI oil seal  size chart

35*45*7
40*50*6
45*55*6
45*55*7
45*55*9
45*60*9
50*65*9
55*70*10
60*73*10
60*80*12
65*78*10
68*78*10
70*83*10
75*88*10
75*90*9
80*93*10
85*100*10
85*100*9
85*100*12
85*105*12
90*105*10
90*110*12
95*110*10
95*115*12
100*115*9
100*115*10

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Feiyun Seals Factory, with more than 15 years of experience, specializes in the production of oil seals and O-rings. We can provide any oil seals and O-rings you need.

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