O-Ring Tables

O-Ring Table JIS B2401

The JIS B2401 standard series: all inner diameters and cord thicknesses with reference number. Use the search to quickly find your size.

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Origin

Japan

Sizes

325

Cord thicknesses

Size example

34.4 × 3.1 mm

Size table

JIS B2401 no.	Inner diameter d₁ (mm)	Cord thickness d₂ (mm)
S3	2.5	1.5
S4	3.5	1.5
S5	4.5	1.5
S6	5.5	1.5
S7	6.5	1.5
S8	7.5	1.5
S9	8.5	1.5
S10	9.5	1.5
S11.2	10.7	1.5
S12	11.5	1.5
S12.5	12	1.5
S14	13.5	1.5
S15	14.5	1.5
S16	15.5	1.5
S18	17.5	1.5
S20	19.5	1.5
S22	21.5	1.5
P3	2.8	1.9
P4	3.8	1.9
P5	4.8	1.9
P6	5.8	1.9
P7	6.8	1.9
P8	7.8	1.9
P9	8.8	1.9
P10	9.8	1.9
S22.4	21.9	2
S24	23.5	2
S25	24.5	2
S26	25.5	2
S28	27.5	2
S29	28.5	2
S30	29.5	2
S31.5	31	2
S32	31.5	2
S34	33.5	2
S35	34.5	2
S35.5	35	2
S36	35.5	2
S38	37.5	2
S39	38.5	2
S40	39.5	2
S42	41.5	2
S44	43.5	2
S45	44.5	2
S46	45.5	2
S48	47.5	2
S50	49.5	2
S53	52.5	2
S55	54.5	2
S56	55.5	2
S60	59.5	2
S63	62.5	2
S65	64.5	2
S67	66.5	2
S70	69.5	2
S71	70.5	2
S75	74.5	2
S80	79.5	2
S85	84.5	2
S90	89.5	2
S95	94.5	2
S100	99.5	2
S105	104.5	2
S110	109.5	2
S112	111.5	2
S115	114.5	2
S120	119.5	2
S125	124.5	2
S130	129.5	2
S132	131.5	2
S135	134.5	2
S140	139.5	2
S145	144.5	2
S150	149.5	2
P10A	9.8	2.4
P11	10.8	2.4
P11.2	11	2.4
P12	11.8	2.4
P12.5	12.3	2.4
P13	12.8	2.4
P14	13.8	2.4
P15	14.8	2.4
P16	15.8	2.4
P17	16.8	2.4
P18	17.8	2.4
P19	18.8	2.4
P20	19.8	2.4
P21	20.8	2.4
P22	21.8	2.4
G25	24.4	3.1
G30	29.4	3.1
G35	34.4	3.1
G40	39.4	3.1
G45	44.4	3.1
G50	49.4	3.1
G55	54.4	3.1
G60	59.4	3.1
G65	64.4	3.1
G70	69.4	3.1
G75	74.4	3.1
G80	79.4	3.1
G85	84.4	3.1
G90	89.4	3.1
G95	94.4	3.1
G100	99.4	3.1
G105	104.4	3.1
G110	109.4	3.1
G115	114.4	3.1
G120	119.4	3.1
G125	124.4	3.1
G130	129.4	3.1
G135	134.4	3.1
G140	139.4	3.1
G145	144.4	3.1
P22A	21.7	3.5
P22.4	22.1	3.5
P24	23.7	3.5
P25	24.7	3.5
P25.5	25.2	3.5
P26	25.7	3.5
P28	27.7	3.5
P29	28.7	3.5
P29.5	29.2	3.5
P30	29.7	3.5
P31	30.7	3.5
P31.5	31.2	3.5
P32	31.7	3.5
P33	32.7	3.5
P34	33.7	3.5
P35	34.7	3.5
P35.5	35.2	3.5
P36	35.7	3.5
P38	37.7	3.5
P39	38.7	3.5
P40	39.7	3.5
P41	40.7	3.5
P42	41.7	3.5
P44	43.7	3.5
P45	44.7	3.5
P46	45.7	3.5
P48	47.7	3.5
P49	48.7	3.5
P50	49.7	3.5
V15	14.5	4
V24	23.5	4
V34	33.5	4
V40	39.5	4
V55	54.5	4
V70	69	4
V85	84	4
V100	99	4
V120	119	4
V150	148.5	4
V175	173	4
P48A	47.6	5.7
P50A	49.6	5.7
P52	51.6	5.7
P53	52.6	5.7
P55	54.6	5.7
P56	55.6	5.7
P58	57.6	5.7
P60	59.6	5.7
P62	61.6	5.7
P63	62.6	5.7
P65	64.6	5.7
P67	66.6	5.7
P70	69.6	5.7
P71	70.6	5.7
P75	74.6	5.7
P80	79.6	5.7
P85	84.6	5.7
P90	89.6	5.7
P95	94.6	5.7
P100	99.6	5.7
P102	101.6	5.7
P105	104.6	5.7
P110	109.6	5.7
P112	111.6	5.7
P115	114.6	5.7
P120	119.6	5.7
P125	124.6	5.7
P130	129.6	5.7
P132	131.6	5.7
P135	134.6	5.7
P140	139.6	5.7
P145	144.6	5.7
G150	149.3	5.7
P150	149.6	5.7
G155	154.3	5.7
G160	159.3	5.7
G165	164.3	5.7
G170	169.3	5.7
G175	174.3	5.7
G180	179.3	5.7
G185	184.3	5.7
G190	189.3	5.7
G195	194.3	5.7
G200	199.3	5.7
G205	204.3	5.7
G210	209.3	5.7
G215	214.3	5.7
G220	219.3	5.7
G225	224.3	5.7
G230	229.3	5.7
G235	234.3	5.7
G240	239.3	5.7
G245	244.3	5.7
G250	249.3	5.7
G255	254.3	5.7
G260	259.3	5.7
G265	264.3	5.7
G270	269.3	5.7
G280	279.3	5.7
G285	284.3	5.7
G290	289.3	5.7
G300	299.3	5.7
G305	304.3	5.7
G310	309.3	5.7
G315	314.3	5.7
G320	319.3	5.7
G325	324.3	5.7
G330	329.3	5.7
G335	334.3	5.7
G340	339.3	5.7
G345	344.3	5.7
G350	349.3	5.7
G355	354.3	5.7
G360	359.3	5.7
G365	364.3	5.7
G370	369.3	5.7
G375	374.3	5.7
G380	379.3	5.7
G385	384.3	5.7
G390	389.3	5.7
G395	394.3	5.7
G400	399.3	5.7
G405	404.3	5.7
G410	409.3	5.7
G415	414.3	5.7
G420	419.3	5.7
G425	424.3	5.7
G430	429.3	5.7
G435	435.3	5.7
G440	439.3	5.7
G445	444.3	5.7
G450	449.3	5.7
G455	454.3	5.7
G460	459.3	5.7
G465	464.3	5.7
G470	469.3	5.7
G475	474.3	5.7
G480	479.3	5.7
G485	484.3	5.7
G490	489.3	5.7
G495	494.3	5.7
G500	499.3	5.7
G510	509.3	5.7
G520	519.3	5.7
V225	222.5	6
V275	272	6
V325	321.5	6
V380	376	6
V430	425.5	6
P150A	149.5	8.4
P155	154.5	8.4
P160	159.5	8.4
P165	164.5	8.4
P170	169.5	8.4
P175	174.5	8.4
P180	179.5	8.4
P185	184.5	8.4
P190	189.5	8.4
P195	194.5	8.4
P200	199.5	8.4
P205	204.5	8.4
P209	208.5	8.4
P210	209.5	8.4
P215	214.5	8.4
P220	219.5	8.4
P225	224.5	8.4
P230	229.5	8.4
P235	234.5	8.4
P240	239.5	8.4
P245	244.5	8.4
P250	249.5	8.4
P255	254.5	8.4
P260	259.5	8.4
P265	264.5	8.4
P270	269.5	8.4
P275	274.5	8.4
P280	279.5	8.4
P285	284.5	8.4
P290	289.5	8.4
P295	294.5	8.4
P300	299.5	8.4
P305	304.5	8.4
P310	309.5	8.4
P315	314.5	8.4
P320	319.5	8.4
P335	334.5	8.4
P340	339.5	8.4
P350	349.5	8.4
P355	354.5	8.4
P360	359.5	8.4
P375	374.5	8.4
P380	379.5	8.4
P385	384.5	8.4
P390	389.5	8.4
P400	399.5	8.4
P410	409.5	8.4
P420	419.5	8.4
P440	439.5	8.4
P450	449.5	8.4
P470	469.5	8.4
P480	479.5	8.4
V480	475	10
V530	524.5	10
V585	579	10
V640	633.5	10
V690	683	10
V740	732.5	10
V790	782	10
V845	836.5	10
V950	940.5	10
V1055	1044	10

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O-ring groove dimensions at a glance

Groove width and depth per cord thickness for flange, piston and rod seals, static and dynamic.

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