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JISB2407 Equivalent Back-Up Ring (GN0521A0)

JISB2407 Equivalent Back-Up Ring GN0521A0

NOK

NOK

JISB2407 Equivalent Back-Up Ring
A back-up ring is a component used in conjunction with an O-ring to provide enhanced sealing performance in certain applications
[Feature]
● Applicable O-ring JIS B 2401 Number Dimension : P3 to P165 and G30 to P180
● Inner Diameter Minimum/ Maximum (mm.) : 3 to 180
● Outer Diameter Minimum/ Maximum (mm.) : 6 to 190
● Shape : Bias cut and Endless
● Material : Rareflon (PTFE)
[Application]
The purpose of these back-up rings is to safeguard the O-ring against extrusion or deformation when exposed to high pressure or dynamic conditions.

(i)Caution

  • Some of the items are scheduled to be discontinued as of end of March in 2023. The manufacturer keep the items produced but they are not available with Misumi.
    There are not the replacement items and the plan to resumption of sale. Please check the quotation and order screen for details.

PDF

Part Number

Configured Part Number is shown.

GN0521A0

Dimension
        

Types of backup rings
 
TypesymbolMaterialShape
T1Rareflon(10FF)Spiral
T2Rareflon(10FF)Bias cut
T3Rareflon(10FF)Endless

1: In case of bias cut or endless backuup ring, difeerence between maximum and minimum deimensions of width 'W' for the same backup ring is less than 0.05 mm.
2: Dimension 'Z' is a gap when a backup ring is installed onto the same shaft as inside diameter of a groove according to its O-Ring callout.
3: Bias cut type is made by a cut in one position from endless type.
4: 'Rareflon' is registered as NOK trademark for PTFE 

Specification Table

JIS B 2407 equivalent Backup ring dimensions for P series
NOK codeBackup ring
Callout number		SpiralBias cut or EndlessO-Ring application
JIS B 2401-1
Dimension number
T1
(Spiral)		T2
(Bias cut)		T3
(Endless)		Inside diameter
d		Width
W		Thickness
T		Gap
Z		Inside diameter
d		Outside diameter
D		Thickness
T
GN 0090 A1GN 0367 A3GN 0711
A0		P331.5+0.03
-0.05		0.7±0.061.2±0.43＋ 0.15
0		60
− 0.15		1.25±0.1P3
GN 0093 A1GN 0370 A2GN 0714
A0		P4447P4
GN 0095 A1GN 0372 A3GN 0716
A0		P5558P5
GN 0097 A1GN 0375 A2GN 0719
A0		P6669P6
GN 0099 A1GN 0378 A2GN 0722
A0		P77710P7
GN 0101 A1GN 0380 A5GN 0724
A0		P88811P8
GN 0102 A1GN 0382 A4GN 0727
A0		P99912P9
GN 0105 A1GN 0386 A2GN 0731
A0		P10101013P10
GN 0106 A0GN 0387 A0GN 0732
A0		P10A102.0+0.03
-0.05		0.7±0.051.4±0.810＋ 0.15
0		140
− 0.15		1.25±0.1P10A
GN 0107 A0GN 0389 A0GN 0734
A0		P11111115P11
GN 0109 A0GN 0390 A0GN 0735
A0		P11.211.211.215.2P11.2
GN 0110 A0GN 0393 A0GN 0739
A0		P12121216P12
GN 0111 A0GN 0395 A0GN 0740
A0		P12.512.512.516.5P12.5
GN 0113 A0GN 0398 A0GN 0744
A0		P14141418P14
GN 0115 A0GN 0401 A0GN 0748
A0		P15151519P15
GN 0117 A0GN 0402 A0GN 0750
A0		P16161620P16
GN 0119 A0GN 0408 A0GN 0756
A0		P18181822P18
GN 0122 A0GN 0413 A0GN 0761
A0		P20202024P20
GN 0124 A0GN 0414 A0GN 0763
A0		P21212125P21
GN 0125 A0GN 0418 A0GN 0768
A0		P22222226P22
GN 0126 A0GN 0419 A0GN 0769
A0		P22A223.0+0.03
-0.05		0.7±0.052.5±1.522＋ 0.20
0		280
−0.20		1.25±0.1P22A
GN 0128 A0GN 0420 A0GN 0770
A0		P22.422.422.428.4P22.4
GN 0130 A0GN 0425 A0GN 0775
A0		P24242430P24
GN 0132 A0GN 0430 A0GN 0780
A0		P25252531P25
GN 0134 A0GN 0431 A0GN 0782
A0		P25.525.525.531.5P25.5
GN 0135 A0GN 0435 A0GN 0786
A0		P26262632P26
GN 0137 A0GN 0439 A0GN 0790
A0		P28282834P28
GN 0139 A0GN 0441 A0GN 0793
A0		P29292935P29
GN 0140 A0GN 0444 A0GN 0796
A0		P29.529.529.535.5P29.5
GN 0142 A0GN 0446 A0GN 0798
A0		P30303036P30
GN 0144 A0GN 0451 A0GN 0803
A0		P31313137P31
GN 0145 A0GN 0452 A0GN 0804
A0		P31.531.531.537.5P31.5
GN 0147 A0GN 0453 A0GN 0806
A0		P32323238P32
GN 0149 A0GN 0460 A0GN 0813
A0		P34343440P34
GN 0152 A0GN 0462 A0GN 0815
A0		P35353541P35
GN 0153 A0GN 0465 A0GN 0819
A0		P35.535.535.541.5P35.5
GN 0154 A0GN 0467 A0GN 0822
A0		P36363642P36
GN 0156 A0GN 0470 A0GN 0825
A0		P38383844P38
GN 0159 A0GN 0475 A0GN 0829
A0		P39393945P39
GN 0160 A0GN 0477 A0GN 0831
A0		P40404046P40
GN 0161 A0GN 0479 A0GN 0834
A0		P41414147P41
GN 0164 A0GN 0483 A0GN 0839
A0		P42424248P42
GN 0165 A0GN 0485 A0GN 0841
A0		P44444450P44
GN 0169 A0GN 0489 A0GN 0844
A0		P45454551P45
GN 0170 A0GN 0492 A0GN 0848
A0		P46464652P46
GN 0173 A0GN 0495 A0GN 0851
A0		P48484854P48
GN 0175 A0GN 0499 A0GN 0856
A0		P49494955P49
GN 0177 A0GN 0502 A0GN 0859
A0		P50505056P50
GN 0174 A0GN 0496 A0GN 0852
A0		P48A485.0+0.03
-0.05		0.9±0.064.5±1.548＋ 0.25
0		580
− 0.25		1.9±0.13P48A
GN 0178 A0GN 0503 A0GN 0860
A0		P50A505060P50A
GN 0180 A0GN 0507 A0GN 0866
A0		P52525262P52
GN 0181 A0GN 0509 A0GN 0868
A0		P53535363P53
GN 0185 A0GN 0515 A0GN 0874
A0		P55555565P55
GN 0186 A0GN 0516 A0GN 0876
A0		P56565666P56
GN 0189 A0GN 0521 A0GN 0882
A0		P58585868P58
GN 0191 A0GN 0524 A0GN 0885
A0		P60606070P60
GN 0194 A0GN 0529 A0GN 0890
A0		P62626272P62
GN 0195 A0GN 0531 A0GN 0892
A0		P63636373P63
GN 0199 A0GN 0536 A0GN 0898
A0		P65656575P65
GN 0202 A0GN 0540 A0GN 0903
A0		P67676777P67
GN 0206 A0GN 0545 A0GN 0909
A0		P70707080P70
GN 0207 A0GN 0548 A0GN 0913
A0		P71717181P71
GN 0211 A0GN 0553 A0GN 0919
A0		P75757585P75
GN 0216 A0GN 0559 A0GN 0926
A0		P80808090P80
GN 0220 A0GN 0563 A0GN 0931
A0		P85858595P85
GN 0226 A0GN 0569 A0GN 0938
A0		P909090100P90
GN 0230 A0GN 0573 A0GN 0944
A0		P959595105P95
GN 0236 A0GN 0579 A0GN 0951
A0		P100100100110P100
GN 0239 A0GN 0581 A0GN 0954
A0		P102102102112P102
GN 0243 A0GN 0585 A0GN 0958
A0		P105105105115P105
GN 0246 A0GN 0590 A0GN 0965
A0		P110110110120P110
GN 0249 A0GN 0593 A0GN 0969
A0		P112112112122P112
GN 0254 A0GN 0596 A0GN 0973
A0		P115115115125P115
GN 0258 A0GN 0602 A0GN 0981
A0		P120120120130P120
GN 0262 A0GN 0605 A0GN 0985
A0		P125125125135P125
GN 0265 A0GN 0609 A0GN 0990
A0		P130130130140P130
GN 0267 A0GN 0611 A0GN 0993
A0		P132132132142P132
GN 0270 A0GN 0614 A0GN 0997
A0		P135135135145P135
GN 0274 A0GN 0617 A0GN 1001
A0		P140140140150P140
GN 0277 A0GN 0621 A0GN 1006
A0		P145145145155P145
GN 0280 A0GN 0623 A0GN 1009
A2		P150150150160P150
GN 0281 A0GN 0624 A0GN 1010
A0		P150A1507.5+0.03
-0.05		1.4±0.086.0±2.0150＋ 0.30
0		1650
− 0.30		2.75±0.15P150A
GN 0284 A0GN 0628 A0GN 1015
A0		P155155155170P155
GN 0287 A0GN 0631 A0GN 1019
A0		P160160160175P160
GN 0289 A0GN 0633 A0GN 1022
A0		P165165165180P165
GN 0292 A0GN 0636 A0GN 1026
A0		P170170170185P170
GN 0295 A0GN 0639 A0GN 1030
A0		P175175175190P175
GN 0298 A0GN 0642 A0GN 1034
A0		P180180180195P180
GN 0301 A0GN 0645 A0GN 1038
A0		P185185185200P185
GN 0303 A0GN 0647 A0GN 1041
A0		P190190190205P190
GN 0306 A0GN 0650 A0GN 1045
A0		P195195195210P195
GN 0309 A0GN 0653 A0GN 1049
A0		P200200200215P200
GN 0311 A0GN 0655 A0GN 1052
A0		P205205205220P205
GN 0312 A0GN 0656 A0GN 1054
A0		P209209209224P209
GN 0314 A0GN 0658 A0GN 1056
A0		P210210210225P210
GN 0315 A0GN 0659 A0GN 1059
A0		P215215215230P215
GN 0318 A0GN 0662 A0GN 1062
A0		P220220220235P220
GN 0319 A0GN 0663 A0GN 1064
A0		P225225225240P225
GN 0322 A0GN 0666 A0GN 1068
A0		P230230230245P230
GN 0323 A0GN 0667 A0GN 1070
A0		P235235235250P235
GN 0325 A0GN 0669 A0GN 1072
A0		P240240240255P240
GN 0327 A0GN 0671 A0GN 1075
A0		P245245245260P245
GN 0329 A0GN 0673 A0GN 1077
A0		P250250250265P250
GN 0331 A0GN 0675 A0GN 1080
A0		P255255255270P255
GN 0333 A0GN 0677 A0GN 1082
A0		P260260260275P260
GN 0334 A0GN 0678 A0GN 1084
A0		P265265265280P265
GN 0337 A0GN 0681 A0GN 1088
A0		P270270270285P270
GN 0338 A0GN 0682 A0GN 1090
A0		P275275275290P275
GN 0341 A0GN 0684 A0GN 1092
A0		P280280280295P280
GN 0342 A0GN 0686 A0GN 1095
A0		P285285285300P285
GN 0344 A0GN 0688 A0GN 1097
A0		P290290290305P290
GN 0346 A0GN 0690 A0GN 1100
A0		P295295295310P295
GN 0348 A0GN 0692 A0GN 1102
A0		P300300300315P300
GN 0350 A0GN 0694 A0GN 1106
A0		P315315315330P315
GN 0352 A0GN 0696 A0GN 1108
A0		P320320320335P320
GN 0354 A0GN 0698 A0GN 1112
A0		P335335335350P335
GN 0355 A0GN 0699 A0GN 1113
A0		P340340340355P340
GN 0357 A0GN 0701 A0GN 1117
A0		P355355355370P355
GN 0359 A0GN 0703 A0GN 1119
A0		P360360360375P360
GN 0361 A0GN 0705 A0GN 1123
A0		P375375375390P375
GN 0363 A0GN 0707 A0GN 1126
A0		P385385385400P385
GN 0365 A0GN 0709 A0GN 1129
A0		P400400400415P400


JIS B 2407 equivalent Backup ring dimensions for G series
NOK codeBackup ring
Callout number		SpiralBias cut or EndlessO-Ring application
JIS B 2401-1
Dimension number
T1
(Spiral)		T2
(Bias cut)		T3 (Endless)Inside diameter
d		Width
W		Thickness
T		Gap
Z		Inside diameter
d		Outside diameter
D		Thickness
T
GN 0131 A0GN 0429 A0GN 0779
A0		G25252.5＋0.03
−0.05		0.7±0.054.5±1.525＋ 0.20
0		300
− 0.20		1.25±0.10G25
GN 0141 A0GN 0445 A0GN 0797
A0		G30303035G30
GN 0151 A0GN 0461 A0GN 0814
A0		G35353540G35
GN 1131 A0GN 0476 A0GN 0830
A0		G40404045G40
GN 0168 A0GN 0488 A0GN 0843
A0		G45454550G45
GN 0176 A0GN 0501 A0GN 0858
A0		G50505055G50
GN 0184 A0GN 0514 A0GN 0873
A0		G555555＋ 0.25
0		600
− 0.25		G55
GN 0190 A0GN 0523 A0GN 0884
A0		G60606065G60
GN 0198 A0GN 0535 A0GN 0897
A0		G65656570G65
GN 0205 A0GN 0543 A0GN 0907
A0		G70707075G70
GN 0210 A0GN 0552 A0GN 0918
A0		G75757580G75
GN 0215 A0GN 0558 A0GN 0925
A0		G80808085G80
GN 0219 A0GN 0562 A0GN 0930
A0		G85858590G85
GN 0225 A0GN 0568 A0GN 0937
A0		G90909095G90
GN 0229 A0GN 0572 A0GN 0943
A0		G959595100G95
GN 0235 A0GN 0578 A0GN 0950
A0		G100100100105G100
GN 0242 A0GN 0584 A0GN 0957
A0		G105105105110G105
GN 0245 A0GN 0589 A0GN 0964
A0		G110110110115G110
GN 0253 A0GN 0595 A0GN 0972
A0		G115115115120G115
GN 0257 A0GN 0601 A0GN 0980
A0		G120120120125G120
GN 0261 A0GN 0604 A0GN 0984
A0		G125125125130G125
GN 0264 A0GN 0608 A0GN 0989
A0		G130130130135G130
GN 0269 A0GN 0613 A0GN 0996
A0		G135135135140G135
GN 0273 A0GN 0616 A0GN 1000
A0		G140140140145G140
GN 0276 A0GN 0620 A0GN 1005
A0		G145145145150G145
GN 0280 A2GN 0623 A2GN 1009
A3		G1501505＋0.03
−0.05		0.9±0.066.0±2.0150＋ 0.30
0		1600
− 0.30		1.9±0.13G150
GN 0283 A0GN 0627 A0GN 1014
A0		G155155155165G155
GN 0286 A0GN 0630 A0GN 1018
A0		G160160160170G160
GN 0288 A0GN 0632 A0GN 1021
A0		G165165165175G165
GN 0291 A0GN 0635 A0GN 1025
A0		G170170170180G170
GN 0294 A0GN 0638 A0GN 1029
A0		G175175175185G175
GN 0297 A0GN 0641 A0GN 1033
A0		G180180180190G180
GN 0300 A0GN 0644 A0GN 1037
A0		G185185185195G185
GN 0302 A0GN 0646 A0GN 1040
A0		G190190190200G190
GN 0305 A0GN 0649 A0GN 1044
A0		G195195195205G195
GN 0308 A0GN 0652 A0GN 1048
A0		G200200200210G200
GN 0313 A0GN 0657 A0GN 1055
A0		G210210210220G210
GN 0317 A0GN 0661 A0GN 1061
A0		G220220220230G220
GN 0321 A0GN 0665 A0GN 1067
A0		G230230230240G230
GN 0324 A0GN 0668 A0GN 1071
A0		G240240240250G240
GN 0328 A0GN 0672 A0GN 1076
A0		G250250250260G250
GN 0332 A0GN 0676 A0GN 1081
A0		G260260260270G260
GN 0336 A0GN 0680 A0GN 1087
A0		G270270270280G270
GN 0340 A0GN 0683 A0GN 1091
A0		G280280280290G280
GN 0343 A0GN 0687 A0GN 1096
A0		G290290290300G290
GN 0347 A0GN 0691 A0GN 1101
A0		G300300300310G300
30
45
60
  1. 1
Part Number
GN0521A0
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipApplicable O-ring JIS B 2401 Dimension Number Back-Up Ring Internal Diameter d
(mm) 		Back-Up Ring Outer Diameter D
(mm) 		Back-Up Ring Shape

SGD 4.58

10 Piece(s) 8 Day(s) or more P585868Bias Cut

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  1. 1
 

Basic Information

Types Back-Up Ring Back-Up Ring Material Rareflon (PTFE)

Please check the type/dimensions/specifications of the part GN0521A0 in the JISB2407 Equivalent Back-Up Ring series.

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Specification/Dimensions

  • type

    • T2
    • T3

    Clear

  • Applicable O-ring JIS B 2401 Dimension Number

    • P3
    • P4
    • P5
    • P6
    • P8
    • P10
    • P10A
    • P11
    • P11.2
    • P12
    • P12.5
    • P14
    • P15
    • P16
    • P18
    • P20
    • P21
    • P22
    • P22A
    • P24
    • P25
    • P25.5
    • P26
    • P28
    • P29
    • P29.5
    • G30
    • P30
    • P31
    • P31.5
    • P34
    • G35
    • P35.5
    • P36
    • P38
    • P39
    • G40
    • P40
    • P41
    • P42
    • P44
    • G45
    • P45
    • P46
    • P48
    • P48A
    • P49
    • P50
    • P50A
    • P52
    • P53
    • P55
    • P56
    • P58
    • P60
    • P62
    • P63
    • G65
    • P65
    • P67
    • G70
    • P71
    • P75
    • G80
    • P80
    • P85
    • P90
    • G95
    • P95
    • P100
    • P102
    • P105
    • P110
    • P112
    • G115
    • P115
    • P120
    • P125
    • P130
    • P132
    • G135
    • P135
    • G140
    • P140
    • P145
    • P150
    • P160
    • P165
    • G180
    • G210
    • G220
    • P240

    Clear

  • Back-Up Ring Internal Diameter d(mm)

    • 3
    • 4
    • 5
    • 6
    • 8
    • 10
    • 11
    • 11.2
    • 12
    • 12.5
    • 14
    • 15
    • 16
    • 18
    • 20
    • 21
    • 22
    • 24
    • 25
    • 25.5
    • 26
    • 28
    • 29
    • 29.5
    • 30
    • 31
    • 31.5
    • 34
    • 35
    • 35.5
    • 36
    • 38
    • 39
    • 40
    • 41
    • 42
    • 44
    • 45
    • 46
    • 48
    • 49
    • 50
    • 52
    • 53
    • 55
    • 56
    • 58
    • 60
    • 62
    • 63
    • 65
    • 67
    • 70
    • 71
    • 75
    • 80
    • 85
    • 90
    • 95
    • 100
    • 102
    • 105
    • 110
    • 112
    • 115
    • 120
    • 125
    • 130
    • 132
    • 135
    • 140
    • 145
    • 150
    • 160
    • 165
    • 180
    • 210
    • 220
    • 240

    Clear

  • Back-Up Ring Outer Diameter D(mm)

    • 6
    • 7
    • 8
    • 9
    • 11
    • 13
    • 14
    • 15
    • 15.2
    • 16
    • 16.5
    • 18
    • 19
    • 20
    • 22
    • 24
    • 25
    • 26
    • 28
    • 30
    • 31
    • 31.5
    • 32
    • 34
    • 35
    • 35.5
    • 36
    • 37
    • 37.5
    • 40
    • 41.5
    • 42
    • 44
    • 45
    • 46
    • 47
    • 48
    • 50
    • 51
    • 52
    • 54
    • 55
    • 56
    • 58
    • 60
    • 62
    • 63
    • 65
    • 66
    • 68
    • 70
    • 72
    • 73
    • 75
    • 77
    • 81
    • 85
    • 90
    • 95
    • 100
    • 105
    • 110
    • 112
    • 115
    • 120
    • 122
    • 125
    • 130
    • 135
    • 140
    • 142
    • 145
    • 150
    • 155
    • 160
    • 175
    • 180
    • 190
    • 220
    • 230
    • 255

    Clear

  • Back-Up Ring Shape

    • Bias Cut
    • Bias cut
    • Endless

    Clear

Days to Ship

    • All
    • 4 Day(s) or Less
    • 8 Day(s) or Less
    • 9 Day(s) or Less
    • 15 Day(s) or Less

    Clear

Specify Alterations

Similar Part Numbers

Part Number
GN0380A5
GN0386A2
GN0387A0
GN0524A0
GN0529A0
GN0531A0
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipApplicable O-ring JIS B 2401 Dimension Number Back-Up Ring Internal Diameter d
(mm) 		Back-Up Ring Outer Diameter D
(mm) 		Back-Up Ring Shape

SGD 0.98

1 Piece(s) 15 Day(s) or more P8811Bias Cut

SGD 0.97

1 Piece(s) 4 Day(s) or more P101013Bias Cut

SGD 1.16

1 Piece(s) 4 Day(s) or more P10A1014Bias Cut

SGD 4.86

10 Piece(s) 8 Day(s) or more P606070Bias Cut

SGD 4.86

10 Piece(s) 8 Day(s) or more P626272Bias Cut

SGD 4.86

10 Piece(s) 8 Day(s) or more P636373Bias Cut

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