O RINGS

BS-1806 O-RINGS

The simplest solution for any application

Introduction

BS-1806 O-RINGS

British Standard or BS standard includes all sizes in AS568 with some other additions. BS 1806 O ring size standard was issued by British Standard Institution and has a list of all Imperial size standards. Though this has been superseded by BS ISO 3601, it is still relevant in today’s time as it is widely referenced in the European region.

Standard Dimensions

BS-1806 O-Ring Sizing Chart

To calculate an o-ring’s outside diameter (OD) you may use this formula: 2(CS) + ID = OD
Conversely, if you have the OD and need to find the ID use this formula: OD – 2(CS) = ID

Size	CS (in)	ID (in)	OD (in)	CS (mm)	ID (mm)	OD (mm)
1	0.04	0.029	0.109	1.02	0.74	2.78
2	0.05	0.042	0.142	1.27	1.07	3.61
3	0.06	0.056	0.176	1.52	1.42	4.46
4	0.07	0.07	0.21	1.78	1.78	5.34
5	0.07	0.101	0.241	1.78	2.57	6.13
6	0.07	0.114	0.254	1.78	2.9	6.46
7	0.07	0.145	0.285	1.78	3.68	7.24
8	0.07	0.176	0.316	1.78	4.47	8.03
9	0.07	0.208	0.348	1.78	5.28	8.84
10	0.07	0.239	0.379	1.78	6.07	9.63
11	0.07	0.301	0.441	1.78	7.65	11.21
12	0.07	0.364	0.504	1.78	9.25	12.81
13	0.07	0.426	0.566	1.78	10.82	14.38
14	0.07	0.489	0.629	1.78	12.42	15.98
15	0.07	0.551	0.691	1.78	14	17.56
16	0.07	0.614	0.754	1.78	15.6	19.16
17	0.07	0.676	0.816	1.78	17.17	20.73
18	0.07	0.739	0.879	1.78	18.77	22.33
19	0.07	0.801	0.941	1.78	20.35	23.91
20	0.07	0.864	1.004	1.78	21.95	25.51
21	0.07	0.926	1.066	1.78	23.52	27.08
22	0.07	0.989	1.129	1.78	25.12	28.68
23	0.07	1.051	1.191	1.78	26.7	30.26
24	0.07	1.114	1.254	1.78	28.3	31.86
25	0.07	1.176	1.316	1.78	29.87	33.43
26	0.07	1.239	1.379	1.78	31.47	35.03
27	0.07	1.301	1.441	1.78	33.05	36.61
28	0.07	1.364	1.504	1.78	34.65	38.21
29	0.07	1.489	1.629	1.78	37.82	41.38
30	0.07	1.614	1.754	1.78	41	44.56
31	0.07	1.739	1.879	1.78	44.17	47.73
32	0.07	1.864	2.004	1.78	47.35	50.91
33	0.07	1.989	2.129	1.78	50.52	54.08
34	0.07	2.114	2.254	1.78	53.7	57.26
35	0.07	2.239	2.379	1.78	56.87	60.43
36	0.07	2.364	2.504	1.78	60.05	63.61
37	0.07	2.489	2.629	1.78	63.22	66.78
38	0.07	2.614	2.754	1.78	66.4	69.96
39	0.07	2.739	2.879	1.78	69.57	73.13
40	0.07	2.864	3.004	1.78	72.75	76.31
41	0.07	2.989	3.129	1.78	75.92	79.48
42	0.07	3.239	3.379	1.78	82.27	85.83
43	0.07	3.489	3.629	1.78	88.62	92.18
44	0.07	3.739	3.879	1.78	94.97	98.53
45	0.07	3.989	4.129	1.78	101.32	104.88
46	0.07	4.239	4.379	1.78	107.67	111.23
47	0.07	4.489	4.629	1.78	114.02	117.58
48	0.07	4.739	4.879	1.78	120.37	123.93
49	0.07	4.989	5.129	1.78	126.72	130.28
50	0.07	5.239	5.379	1.78	133.07	136.63
102	0.103	0.049	0.255	2.62	1.24	6.48
103	0.103	0.081	0.287	2.62	2.06	7.3
104	0.103	0.112	0.318	2.62	2.84	8.08
105	0.103	0.143	0.349	2.62	3.63	8.87
106	0.103	0.174	0.38	2.62	4.42	9.66
107	0.103	0.206	0.412	2.62	5.23	10.47
108	0.103	0.237	0.443	2.62	6.02	11.26
109	0.103	0.299	0.505	2.62	7.59	12.83
110	0.103	0.362	0.568	2.62	9.19	14.43
111	0.103	0.424	0.63	2.62	10.77	16.01
112	0.103	0.487	0.693	2.62	12.37	17.61
113	0.103	0.549	0.755	2.62	13.94	19.18
114	0.103	0.612	0.818	2.62	15.54	20.78
115	0.103	0.674	0.88	2.62	17.12	22.36
116	0.103	0.737	0.943	2.62	18.72	23.96
117	0.103	0.799	1.005	2.62	20.29	25.53
118	0.103	0.862	1.068	2.62	21.89	27.13
119	0.103	0.924	1.13	2.62	23.47	28.71
120	0.103	0.987	1.193	2.62	25.07	30.31
121	0.103	1.049	1.255	2.62	26.64	31.88
122	0.103	1.112	1.318	2.62	28.24	33.48
123	0.103	1.174	1.38	2.62	29.82	35.06
124	0.103	1.237	1.443	2.62	31.42	36.66
125	0.103	1.299	1.505	2.62	32.99	38.23
126	0.103	1.362	1.568	2.62	34.59	39.83
127	0.103	1.424	1.63	2.62	36.17	41.41
128	0.103	1.487	1.693	2.62	37.77	43.01
129	0.103	1.549	1.755	2.62	39.34	44.58
130	0.103	1.612	1.818	2.62	40.94	46.18
131	0.103	1.674	1.88	2.62	42.52	47.76
132	0.103	1.737	1.943	2.62	44.12	49.36
133	0.103	1.799	2.005	2.62	45.69	50.93
134	0.103	1.862	2.068	2.62	47.29	52.53
135	0.103	1.925	2.131	2.62	48.9	54.14
136	0.103	1.987	2.193	2.62	50.47	55.71
137	0.103	2.05	2.256	2.62	52.07	57.31
138	0.103	2.112	2.318	2.62	53.64	58.88
139	0.103	2.175	2.381	2.62	55.25	60.49
140	0.103	2.237	2.443	2.62	56.82	62.06
141	0.103	2.3	2.506	2.62	58.42	63.66
142	0.103	2.362	2.568	2.62	59.99	65.23
143	0.103	2.425	2.631	2.62	61.6	66.84
144	0.103	2.487	2.693	2.62	63.17	68.41
145	0.103	2.55	2.756	2.62	64.77	70.01
146	0.103	2.612	2.818	2.62	66.34	71.58
147	0.103	2.675	2.881	2.62	67.95	73.19
148	0.103	2.737	2.943	2.62	69.52	74.76
149	0.103	2.8	3.006	2.62	71.12	76.36
150	0.103	2.862	3.068	2.62	72.69	77.93
151	0.103	2.987	3.193	2.62	75.87	81.11
152	0.103	3.237	3.443	2.62	82.22	87.46
153	0.103	3.487	3.693	2.62	88.57	93.81
154	0.103	3.737	3.943	2.62	94.92	100.16
155	0.103	3.987	4.193	2.62	101.27	106.51
156	0.103	4.237	4.443	2.62	107.62	112.86
157	0.103	4.487	4.693	2.62	113.97	119.21
158	0.103	4.737	4.943	2.62	120.32	125.56
159	0.103	4.987	5.193	2.62	126.67	131.91
160	0.103	5.237	5.443	2.62	133.02	138.26
161	0.103	5.487	5.693	2.62	139.37	144.61
162	0.103	5.737	5.943	2.62	145.72	150.96
163	0.103	5.987	6.193	2.62	152.07	157.31
164	0.103	6.237	6.443	2.62	158.42	163.66
165	0.103	6.487	6.693	2.62	164.77	170.01
166	0.103	6.737	6.943	2.62	171.12	176.36
167	0.103	6.987	7.193	2.62	177.47	182.71
168	0.103	7.237	7.443	2.62	183.82	189.06
169	0.103	7.487	7.693	2.62	190.17	195.41
170	0.103	7.737	7.943	2.62	196.52	201.76
171	0.103	7.987	8.193	2.62	202.87	208.11
172	0.103	8.237	8.443	2.62	209.22	214.46
173	0.103	8.487	8.693	2.62	215.57	220.81
174	0.103	8.737	8.943	2.62	221.92	227.16
175	0.103	8.987	9.193	2.62	228.27	233.51
176	0.103	9.237	9.443	2.62	234.62	239.86
177	0.103	9.487	9.693	2.62	240.97	246.21
178	0.103	9.737	9.943	2.62	247.32	252.56
201	0.139	0.171	0.449	3.53	4.34	11.4
202	0.139	0.234	0.512	3.53	5.94	13
203	0.139	0.296	0.574	3.53	7.52	14.58
204	0.139	0.359	0.637	3.53	9.12	16.18
205	0.139	0.421	0.699	3.53	10.69	17.75
206	0.139	0.484	0.762	3.53	12.29	19.35
207	0.139	0.546	0.824	3.53	13.87	20.93
208	0.139	0.609	0.887	3.53	15.47	22.53
209	0.139	0.671	0.949	3.53	17.04	24.1
210	0.139	0.734	1.012	3.53	18.64	25.7
211	0.139	0.796	1.074	3.53	20.22	27.28
212	0.139	0.859	1.137	3.53	21.82	28.88
213	0.139	0.921	1.199	3.53	23.39	30.45
214	0.139	0.984	1.262	3.53	24.99	32.05
215	0.139	1.046	1.324	3.53	26.57	33.63
216	0.139	1.109	1.387	3.53	28.17	35.23
217	0.139	1.171	1.449	3.53	29.74	36.8
218	0.139	1.234	1.512	3.53	31.34	38.4
219	0.139	1.296	1.574	3.53	32.92	39.98
220	0.139	1.359	1.637	3.53	34.52	41.58
221	0.139	1.421	1.699	3.53	36.09	43.15
222	0.139	1.484	1.762	3.53	37.69	44.75
223	0.139	1.609	1.887	3.53	40.87	47.93
224	0.139	1.734	2.012	3.53	44.04	51.1
225	0.139	1.859	2.137	3.53	47.22	54.28
226	0.139	1.984	2.262	3.53	50.39	57.45
227	0.139	2.109	2.387	3.53	53.57	60.63
228	0.139	2.234	2.512	3.53	56.74	63.8
229	0.139	2.359	2.637	3.53	59.92	66.98
230	0.139	2.484	2.762	3.53	63.09	70.15
231	0.139	2.609	2.887	3.53	66.27	73.33
232	0.139	2.734	3.012	3.53	69.44	76.5
233	0.139	2.859	3.137	3.53	72.62	79.68
234	0.139	2.984	3.262	3.53	75.79	82.85
235	0.139	3.109	3.387	3.53	78.97	86.03
236	0.139	3.234	3.512	3.53	82.14	89.2
237	0.139	3.359	3.637	3.53	85.32	92.38
238	0.139	3.484	3.762	3.53	88.49	95.55
239	0.139	3.609	3.887	3.53	91.67	98.73
240	0.139	3.734	4.012	3.53	94.84	101.9
241	0.139	3.859	4.137	3.53	98.02	105.08
242	0.139	3.984	4.262	3.53	101.19	108.25
243	0.139	4.109	4.387	3.53	104.37	111.43
244	0.139	4.234	4.512	3.53	107.54	114.6
245	0.139	4.359	4.637	3.53	110.72	117.78
246	0.139	4.484	4.762	3.53	113.89	120.95
247	0.139	4.609	4.887	3.53	117.07	124.13
248	0.139	4.734	5.012	3.53	120.24	127.3
249	0.139	4.859	5.137	3.53	123.42	130.48
250	0.139	4.984	5.262	3.53	126.59	133.65
251	0.139	5.109	5.387	3.53	129.77	136.83
252	0.139	5.234	5.512	3.53	132.94	140
253	0.139	5.359	5.637	3.53	136.12	143.18
254	0.139	5.484	5.762	3.53	139.29	146.35
255	0.139	5.609	5.887	3.53	142.47	149.53
256	0.139	5.734	6.012	3.53	145.64	152.7
257	0.139	5.859	6.137	3.53	148.82	155.88
258	0.139	5.984	6.262	3.53	151.99	159.05
259	0.139	6.234	6.512	3.53	158.34	165.4
260	0.139	6.484	6.762	3.53	164.69	171.75
261	0.139	6.734	7.012	3.53	171.04	178.1
262	0.139	6.984	7.262	3.53	177.39	184.45
263	0.139	7.234	7.512	3.53	183.74	190.8
264	0.139	7.484	7.762	3.53	190.09	197.15
265	0.139	7.734	8.012	3.53	196.44	203.5
266	0.139	7.984	8.262	3.53	202.79	209.85
267	0.139	8.234	8.512	3.53	209.14	216.2
268	0.139	8.484	8.762	3.53	215.49	222.55
269	0.139	8.734	9.012	3.53	221.84	228.9
270	0.139	8.984	9.262	3.53	228.19	235.25
271	0.139	9.234	9.512	3.53	234.54	241.6
272	0.139	9.484	9.762	3.53	240.89	247.95
273	0.139	9.734	10.012	3.53	247.24	254.3
274	0.139	9.984	10.262	3.53	253.59	260.65
275	0.139	10.484	10.762	3.53	266.29	273.35
276	0.139	10.984	11.262	3.53	278.99	286.05
277	0.139	11.484	11.762	3.53	291.69	298.75
278	0.139	11.984	12.262	3.53	304.39	311.45
279	0.139	12.984	13.262	3.53	329.79	336.85
280	0.139	13.984	14.262	3.53	355.19	362.25
281	0.139	14.984	15.262	3.53	380.59	387.65
282	0.139	15.955	16.233	3.53	405.26	412.32
283	0.139	16.955	17.233	3.53	430.66	437.72
284	0.139	17.955	18.233	3.53	456.06	463.12
309	0.21	0.412	0.832	5.33	10.46	21.12
310	0.21	0.475	0.895	5.33	12.07	22.73
311	0.21	0.537	0.957	5.33	13.64	24.3
312	0.21	0.6	1.02	5.33	15.24	25.9
313	0.21	0.662	1.082	5.33	16.81	27.47
314	0.21	0.725	1.145	5.33	18.42	29.08
315	0.21	0.787	1.207	5.33	19.99	30.65
316	0.21	0.85	1.27	5.33	21.59	32.25
317	0.21	0.912	1.332	5.33	23.16	33.82
318	0.21	0.975	1.395	5.33	24.77	35.43
319	0.21	1.037	1.457	5.33	26.34	37
320	0.21	1.1	1.52	5.33	27.94	38.6
321	0.21	1.162	1.582	5.33	29.51	40.17
322	0.21	1.225	1.645	5.33	31.12	41.78
323	0.21	1.287	1.707	5.33	32.69	43.35
324	0.21	1.35	1.77	5.33	34.29	44.95
325	0.21	1.475	1.895	5.33	37.47	48.13
326	0.21	1.6	2.02	5.33	40.64	51.3
327	0.21	1.725	2.145	5.33	43.82	54.48
328	0.21	1.85	2.27	5.33	46.99	57.65
329	0.21	1.975	2.395	5.33	50.17	60.83
330	0.21	2.1	2.52	5.33	53.34	64
331	0.21	2.225	2.645	5.33	56.52	67.18
332	0.21	2.35	2.77	5.33	59.69	70.35
333	0.21	2.475	2.895	5.33	62.87	73.53
334	0.21	2.6	3.02	5.33	66.04	76.7
335	0.21	2.725	3.145	5.33	69.22	79.88
336	0.21	2.85	3.27	5.33	72.39	83.05
337	0.21	2.975	3.395	5.33	75.57	86.23
338	0.21	3.1	3.52	5.33	78.74	89.4
339	0.21	3.225	3.645	5.33	81.92	92.58
340	0.21	3.35	3.77	5.33	85.09	95.75
341	0.21	3.475	3.895	5.33	88.27	98.93
342	0.21	3.6	4.02	5.33	91.44	102.1
343	0.21	3.725	4.145	5.33	94.62	105.28
344	0.21	3.85	4.27	5.33	97.79	108.45
345	0.21	3.975	4.395	5.33	100.97	111.63
346	0.21	4.1	4.52	5.33	104.14	114.8
347	0.21	4.225	4.645	5.33	107.32	117.98
348	0.21	4.35	4.77	5.33	110.49	121.15
349	0.21	4.475	4.895	5.33	113.67	124.33
350	0.21	4.6	5.02	5.33	116.84	127.5
351	0.21	4.725	5.145	5.33	120.02	130.68
352	0.21	4.85	5.27	5.33	123.19	133.85
353	0.21	4.975	5.395	5.33	126.37	137.03
354	0.21	5.1	5.52	5.33	129.54	140.2
355	0.21	5.225	5.645	5.33	132.72	143.38
356	0.21	5.35	5.77	5.33	135.89	146.55
357	0.21	5.475	5.895	5.33	139.07	149.73
358	0.21	5.6	6.02	5.33	142.24	152.9
359	0.21	5.725	6.145	5.33	145.42	156.08
360	0.21	5.85	6.27	5.33	148.59	159.25
361	0.21	5.975	6.395	5.33	151.77	162.43
362	0.21	6.225	6.645	5.33	158.12	168.78
363	0.21	6.475	6.895	5.33	164.47	175.13
364	0.21	6.725	7.145	5.33	170.82	181.48
365	0.21	6.975	7.395	5.33	177.17	187.83
366	0.21	7.225	7.645	5.33	183.52	194.18
367	0.21	7.475	7.895	5.33	189.87	200.53
368	0.21	7.725	8.145	5.33	196.22	206.88
369	0.21	7.975	8.395	5.33	202.57	213.23
370	0.21	8.225	8.645	5.33	208.92	219.58
371	0.21	8.475	8.895	5.33	215.27	225.93
372	0.21	8.725	9.145	5.33	221.62	232.28
373	0.21	8.975	9.395	5.33	227.97	238.63
374	0.21	9.225	9.645	5.33	234.32	244.98
375	0.21	9.475	9.895	5.33	240.67	251.33
376	0.21	9.725	10.145	5.33	247.02	257.68
377	0.21	9.975	10.395	5.33	253.37	264.03
378	0.21	10.475	10.895	5.33	266.07	276.73
379	0.21	10.975	11.395	5.33	278.77	289.43
380	0.21	11.475	11.895	5.33	291.47	302.13
381	0.21	11.975	12.395	5.33	304.17	314.83
382	0.21	12.975	13.395	5.33	329.57	340.23
383	0.21	13.975	14.395	5.33	354.97	365.63
384	0.21	14.975	15.395	5.33	380.37	391.03
385	0.21	15.955	16.375	5.33	405.26	415.92
386	0.21	16.955	17.375	5.33	430.66	441.32
387	0.21	17.955	18.375	5.33	456.06	466.72
388	0.21	18.955	19.375	5.33	481.46	492.12
389	0.21	19.955	20.375	5.33	506.86	517.52
390	0.21	20.955	21.375	5.33	532.26	542.92
391	0.21	21.955	22.375	5.33	557.66	568.32
392	0.21	22.94	23.36	5.33	582.68	593.34
393	0.21	23.94	24.36	5.33	608.08	618.74
394	0.21	24.94	25.36	5.33	633.48	644.14
395	0.21	25.94	26.36	5.33	658.88	669.54
425	0.275	4.475	5.025	6.99	113.67	127.65
426	0.275	4.6	5.15	6.99	116.84	130.82
427	0.275	4.725	5.275	6.99	120.02	134
428	0.275	4.85	5.4	6.99	123.19	137.17
429	0.275	4.975	5.525	6.99	126.37	140.35
430	0.275	5.1	5.65	6.99	129.54	143.52
431	0.275	5.225	5.775	6.99	132.72	146.7
432	0.275	5.35	5.9	6.99	135.89	149.87
433	0.275	5.475	6.025	6.99	139.07	153.05
434	0.275	5.6	6.15	6.99	142.24	156.22
435	0.275	5.725	6.275	6.99	145.42	159.4
436	0.275	5.85	6.4	6.99	148.59	162.57
437	0.275	5.975	6.525	6.99	151.77	165.75
438	0.275	6.225	6.775	6.99	158.12	172.1
439	0.275	6.475	7.025	6.99	164.47	178.45
440	0.275	6.725	7.275	6.99	170.82	184.8
441	0.275	6.975	7.525	6.99	177.17	191.15
442	0.275	7.225	7.775	6.99	183.52	197.5
443	0.275	7.475	8.025	6.99	189.87	203.85
444	0.275	7.725	8.275	6.99	196.22	210.2
445	0.275	7.975	8.525	6.99	202.57	216.55
446	0.275	8.475	9.025	6.99	215.27	229.25
447	0.275	8.975	9.525	6.99	227.97	241.95
448	0.275	9.475	10.025	6.99	240.67	254.65
449	0.275	9.975	10.525	6.99	253.37	267.35
450	0.275	10.475	11.025	6.99	266.07	280.05
451	0.275	10.975	11.525	6.99	278.77	292.75
452	0.275	11.475	12.025	6.99	291.47	305.45
453	0.275	11.975	12.525	6.99	304.17	318.15
454	0.275	12.475	13.025	6.99	316.87	330.85
455	0.275	12.975	13.525	6.99	329.57	343.55
456	0.275	13.475	14.025	6.99	342.27	356.25
457	0.275	13.975	14.525	6.99	354.97	368.95
458	0.275	14.475	15.025	6.99	367.67	381.65
459	0.275	14.975	15.525	6.99	380.37	394.35
460	0.275	15.475	16.025	6.99	393.07	407.05
461	0.275	15.955	16.505	6.99	405.26	419.24
462	0.275	16.455	17.005	6.99	417.96	431.94
463	0.275	16.955	17.505	6.99	430.66	444.64
464	0.275	17.455	18.005	6.99	443.36	457.34
465	0.275	17.955	18.505	6.99	456.06	470.04
466	0.275	18.455	19.005	6.99	468.76	482.74
467	0.275	18.955	19.505	6.99	481.46	495.44
468	0.275	19.455	20.005	6.99	494.16	508.14
469	0.275	19.955	20.505	6.99	506.86	520.84
470	0.275	20.955	21.505	6.99	532.26	546.24
471	0.275	21.955	22.505	6.99	557.66	571.64
472	0.275	22.94	23.49	6.99	582.68	596.66
473	0.275	23.94	24.49	6.99	608.08	622.06
474	0.275	24.94	25.49	6.99	633.48	647.46
475	0.275	25.94	26.49	6.99	658.88	672.86
517	0.07	1.428	1.568	1.78	36.27	39.83
519	0.07	1.553	1.693	1.78	39.45	43.01
532	0.07	3.11	3.25	1.78	79	82.56
534	0.07	3.36	3.5	1.78	85.34	88.9
536	0.07	3.61	3.75	1.78	91.7	95.26
538	0.07	3.86	4	1.78	98.05	101.61
540	0.07	4.11	4.25	1.78	104.4	107.96
542	0.07	4.36	4.5	1.78	110.74	114.3
544	0.07	4.61	4.75	1.78	117.1	120.66
546	0.07	4.86	5	1.78	123.44	127
548	0.07	5.094	5.235	1.78	129.4	132.96
550	0.07	5.345	5.485	1.78	135.76	139.32
551	0.07	5.47	5.61	1.78	138.94	142.5
552	0.07	5.595	5.735	1.78	142.11	145.67
553	0.07	5.72	5.86	1.78	145.29	148.85
554	0.07	5.845	5.985	1.78	148.46	152.02
555	0.07	5.97	6.11	1.78	151.64	155.2
556	0.07	6.095	6.235	1.78	154.81	158.37
557	0.07	6.22	6.361	1.78	158	161.56
558	0.07	6.345	6.485	1.78	161.16	164.72
559	0.07	6.47	6.61	1.78	164.34	167.9
560	0.07	6.595	6.735	1.78	167.51	171.07
561	0.07	6.72	6.86	1.78	170.69	174.25
562	0.07	6.845	6.985	1.78	173.87	177.43
606	0.04	0.07	0.15	1.02	1.78	3.82
610	0.07	0.266	0.406	1.78	6.75	10.31
611	0.07	0.344	0.484	1.78	8.73	12.29
613	0.103	0.39	0.596	2.62	9.9	15.14
614	0.103	0.469	0.675	2.62	11.91	17.15
615	0.103	0.516	0.722	2.62	13.1	18.34
615	0.103	0.594	0.8	2.62	15.08	20.32
617	0.103	0.703	0.909	2.62	17.86	23.1
618	0.139	1.016	1.294	3.53	25.8	32.86
619	0.21	2.938	3.358	5.33	74.63	85.29
620	0.21	3.139	3.559	5.33	79.73	90.39
621	0.21	3.531	3.951	5.33	89.69	100.35
622	0.21	3.937	4.357	5.33	100	110.66
623	0.21	4.313	4.732	5.33	109.54	120.2
624	0.275	4.516	5.066	6.99	114.7	128.68
625	0.275	4.906	5.456	6.99	124.6	138.58
626	0.275	5.295	5.846	6.99	134.5	148.48
627	0.275	6.28	6.83	6.99	159.5	173.48
628	0.275	6.563	7.113	6.99	166.7	180.68
640	0.103	2.925	3.131	2.62	74.3	79.54
641	0.103	3.051	3.257	2.62	77.5	82.74
642	0.103	3.173	3.38	2.62	80.6	85.84
643	0.103	3.299	3.506	2.62	83.8	89.04
644	0.21	6.102	6.522	5.33	155	165.66
645	0.21	6.35	6.77	5.33	161.3	171.96
646	0.21	6.602	7.022	5.33	167.7	178.36
647	0.21	6.85	7.27	5.33	174	184.66
648	0.275	12.224	12.775	6.99	310.5	324.48
649	0.275	12.724	13.275	6.99	323.2	337.18
650	0.275	13.224	13.775	6.99	335.9	349.88
674	0.275	8.225	8.776	6.99	208.92	222.9
676	0.275	8.725	9.276	6.99	221.62	235.6
678	0.275	9.225	9.776	6.99	234.32	248.3
680	0.275	9.724	10.275	6.99	247	260.98
682	0.275	10.224	10.775	6.99	259.7	273.68
684	0.275	10.724	11.275	6.99	272.4	286.38
686	0.275	11.224	11.775	6.99	285.1	299.08
688	0.275	11.724	12.275	6.99	297.8	311.78
801	0.07	0.125	0.265	1.78	3.17	6.73
802	0.07	0.187	0.328	1.78	4.76	8.32
803	0.07	0.25	0.39	1.78	6.35	9.91
804	0.07	0.313	0.453	1.78	7.94	11.5
806	0.07	0.437	0.578	1.78	11.11	14.67
807	0.103	0.5	0.706	2.62	12.7	17.94
809	0.103	0.625	0.831	2.62	15.88	21.12
810	0.103	0.687	0.894	2.62	17.46	22.7
812	0.103	0.813	1.019	2.62	20.64	25.88
813	0.103	0.875	1.081	2.62	22.23	27.47
814	0.103	0.937	1.144	2.62	23.81	29.05
824	0.139	1.563	1.841	3.53	39.7	46.76
825	0.139	1.625	1.903	3.53	41.28	48.34
826	0.139	1.687	1.965	3.53	42.86	49.92
827	0.139	1.77	2.048	3.53	44.95	52.01
828	0.139	1.813	2.091	3.53	46.04	53.1
829	0.139	1.875	2.153	3.53	47.62	54.68
830	0.139	1.937	2.215	3.53	49.2	56.26
831	0.139	2	2.278	3.53	50.8	57.86
832	0.139	2.063	2.341	3.53	52.4	59.46
833	0.139	2.125	2.403	3.53	53.97	61.03
834	0.139	2.187	2.465	3.53	55.56	62.62
835	0.139	2.25	2.528	3.53	57.15	64.21
836	0.139	2.313	2.591	3.53	58.74	65.8
837	0.139	2.375	2.653	3.53	60.32	67.38
838	0.139	2.437	2.715	3.53	61.9	68.96
839	0.139	2.5	2.778	3.53	63.5	70.56
840	0.139	2.563	2.841	3.53	65.1	72.16
841	0.139	2.625	2.903	3.53	66.67	73.73
842	0.139	2.687	2.965	3.53	68.26	75.32
843	0.139	2.75	3.028	3.53	69.85	76.91
844	0.139	2.813	3.091	3.53	71.44	78.5
845	0.139	2.875	3.153	3.53	73.02	80.08
846	0.139	2.937	3.215	3.53	74.6	81.66
860	0.21	4.625	5.045	5.33	117.48	128.14
861	0.21	4.75	5.17	5.33	120.65	131.31
862	0.21	4.875	5.295	5.33	123.83	134.49
863	0.21	5	5.42	5.33	127	137.66
864	0.21	5.125	5.545	5.33	130.18	140.84
865	0.21	5.25	5.67	5.33	133.35	144.01
866	0.21	5.375	5.795	5.33	136.53	147.19
867	0.21	5.5	5.92	5.33	139.7	150.36
868	0.21	5.625	6.045	5.33	142.88	153.54
869	0.21	5.75	6.17	5.33	146.05	156.71
870	0.21	5.875	6.295	5.33	149.23	159.89
872	0.275	6.126	6.676	6.99	155.6	169.58
874	0.275	6.374	6.924	6.99	161.9	175.88
876	0.275	6.626	7.176	6.99	168.3	182.28
878	0.275	6.874	7.424	6.99	174.6	188.58
880	0.275	7.126	7.676	6.99	181	194.98
882	0.275	7.374	7.924	6.99	187.3	201.28
884	0.275	7.626	8.176	6.99	193.7	207.68
886	0.275	7.874	8.424	6.99	200	213.98
901	0.056	0.185	0.297	1.42	4.7	7.54
902	0.064	0.239	0.367	1.63	6.07	9.33
903	0.064	0.301	0.43	1.63	7.65	10.91
904	0.072	0.351	0.495	1.83	8.92	12.58
905	0.072	0.414	0.558	1.83	10.52	14.18
906	0.078	0.468	0.624	1.98	11.89	15.85
907	0.082	0.53	0.694	2.08	13.46	17.62
908	0.087	0.644	0.818	2.21	16.36	20.78
909	0.097	0.706	0.9	2.46	17.93	22.85
910	0.097	0.755	0.949	2.46	19.18	24.1
911	0.116	0.863	1.095	2.95	21.92	27.82
912	0.116	0.924	1.156	2.95	23.47	29.37
913	0.116	0.986	1.218	2.95	25.04	30.94
914	0.116	1.047	1.279	2.95	26.59	32.49
916	0.116	1.171	1.403	2.95	29.74	35.64
918	0.116	1.355	1.587	2.95	34.42	40.32
920	0.118	1.475	1.711	3	37.47	43.47
924	0.118	1.72	1.956	3	43.69	49.69
928	0.118	2.09	2.326	3	53.09	59.09
932	0.118	2.337	2.573	3	59.36	65.36
Search	Search	Search	Search	Search	Search	Search

Other Types of O Rings

AS-568

O-rings sizes in Aerospace Standard (AS568B) given by the Society of Automotive Engineers.

Learn More

JISB-2401

O-rings as per the The Japanese Industrial Standard sizes.

Learn More

Metric Sizes

Standard metric sizes defined by the International Standard ISO 3601-1:2002.

Learn More

O RINGS

BS-1806 O-RINGS

Introduction

BS-1806 O-RINGS

Standard Dimensions

BS-1806 O-Ring Sizing Chart

Other Types of O Rings

AS-568

JISB-2401

Metric Sizes

Related Downloadables

Quick Links

INDUSTRIES

Products

Head Office
Western Rubbers India Pvt. Ltd.

Sales Office (U.S.A.)
Western Polymer Group INC.

Custom Solutions

Enquire Now

Fill the form to download Company Brochure

Fill the form to download Rubber Extrusions Brochure

Fill the form to download Diaphragm Brochure

Fill the form to download Inflatable Seals Catalogue

Fill the form to download WR Tubes and Hoses Catalogue

Fill the form to download Rail & Mass Transit Catalogue

O RINGS

BS-1806 O-RINGS

Introduction

BS-1806 O-RINGS

Standard Dimensions

BS-1806 O-Ring Sizing Chart

Other Types of O Rings

AS-568

JISB-2401

Metric Sizes

Related Downloadables

Quick Links

INDUSTRIES

Products

Head Office​ Western Rubbers India Pvt. Ltd.

Sales Office (U.S.A.)Western Polymer Group INC.

Custom Solutions

Enquire Now

Fill the form to download Company Brochure

Fill the form to download Rubber Extrusions Brochure

Fill the form to download Diaphragm Brochure

Fill the form to download Inflatable Seals Catalogue

Fill the form to download WR Tubes and Hoses Catalogue

Fill the form to download Rail & Mass Transit Catalogue

Head Office
Western Rubbers India Pvt. Ltd.

Sales Office (U.S.A.)
Western Polymer Group INC.